Bugs found Combo Chip Time Lives Find the bugs before tape-out. Steer with the arrow keys or by dragging. Space for a power cycle. Drag to steer the harness. Tap Power cycle in the frame to clear the board. Harness crashed. Escaped Wave {n} of {m} Errata fixed Spread shot Shield up Rapid fire Power cycle Drone strafe +1 power cycle {n} bugs squashed on this chip Errata shipped unfixed: −1 life Escaped: −150 {name} breached: −{n} Blocks kept clean: {n} of {m} · {p}% off the shop Clean chip Harness crashed Chip {n} of {m} fuzzed Tape-out! Chip signed off. 8 chips to tape-out Chip {n} of {m} Shipped with bugs: −1 life New bug: glitches dart and jump New bug: Rowhammers sweep and drop faults New bug: Spectres fade in and out New bug: worms take five hits New bug: mimics pose as chocolate Overclock Chocolate wings Needle Magnet Spare core Reset button Boot shield Sidekick Errata sheet Salvo Coolant Afterburner Vacuum Turret Debugger Seeker rounds Twin barrels Underclock Heavy rounds Reflow Spare die Cryo bomb Self-test Loot sense Steady hands Bandolier Coverage bonus Spare die: one more life Shots come faster. Three shots in a fan, always. Shots go through one more bug. Pickups nearby drift to you. One more life. One more bomb on every chip. Every chip starts with a shield. A drone that fires beside you. Bosses take half again as much damage. Every fourth volley fans out. Brown-outs and thrashing last half as long. Move a quarter faster. Every pickup drifts to you. A turret fires from the bottom edge. Armored bugs take double damage. Shots steer toward the nearest bug. Two shots side by side. Bugs crawl fifteen percent slower. One more damage to tough bugs. A broken shield grows back in twenty seconds. Once per run, the last life comes back. A bomb freezes the survivors for two seconds. A life back at the end of each chip. Pickups drop twice as often. The combo survives an escape. A bomb for every fifteen bugs found. Thirty percent more points per bug. Firepower Harness Crew Clock gating Brown-out Bug storm The hydra splits Titan slam Voltage spike: rapid fire Debug window: bugs slowed and revealed Cache thrash: bugs speed up Silicon lottery Fault injection A golden bug! Golden bug squashed Armored Exposed Errata boss Hydra bug Heisenbug Rowhammer titan Race condition Buffer overflow The bug that shipped Cut one, two grow There when you don't look Slams the die Two threads, one lock One byte too many You'll find me in the sheet. Page 40. Every fix is two more bugs. Attach a debugger and I vanish. Every row I hit flips. First to the lock wins. I'm both. 0xFF, and one more. Filed under fixed. No heads left to grow. Observed. Collapsed. Refreshed for good. Serialised. Bounds checked. Crossing Buffer full It opens up right after every volley: fire then Its spawn keeps it safe: squash the worms first It can only be hit while it is there It is soft only while it turns at the edges It opens up as its two runners cross: shoot the crossing Hit it while its buffer is full, before it spills Steady hands Thick skin Quick feet Long fuse Bargain Shots come faster. One more life. Move a little faster. 5 more seconds on every chip. The shop costs 10% less. New bug: swarms rush out in packs New bug: splitters break in two Squash it for a big bonus Beetle Glitch Rowhammer Spectre Worm Mimic Swarm Splitter Taped out Post-silicon Probe Net Fetcher It marks a bug every few seconds: a marked bug is worth double It catches a bug about to escape, then needs a moment It brings in the pickups you cannot reach {name} joins the harness Marked ×2 Netted Fetched Silicon is back from the fab. Let's see what crawls out. Steer under the beetles. The harness fires on its own. Bugs drop parts. Run over them. Every wave comes faster. The bar at the top is the chip's clock. First bug squashed. Chain kills for a multiplier. One got past. Five escapes ship a bug. Something big stirs under the die. The errata. Watch for the moment it opens up. Errata sheet updated. Ship it, then respin. Respin. New floorplan, new bugs, and I called in help. Beetles spit faults from this chip on. Dodge the crosses. Halfway to tape-out. Armored bugs from here: the hexagon means wait. Mimics look like chocolate. Shoot what moves. Last chip. Tape-out is one errata away. Taped out. Go celebrate.

Caught Combo Wave Leaks left Values left Guard the ports. Pick a tower on the bar, tap the board to place it. Tap a tainted value to scrub it by hand. Tap a tower for its menu. Pick a tower on the bar, press the board to place it. Tap a tainted value to scrub it. Drag towers during the build phase. Leaked. Leaked Wave {n} of {m} held Die secured. 10 waves to secure the die Wave {n} of {m} Tracker placed Tracker full Not enough points On a wire Too close to a tower Keep clear of the core and the ports Off the edge Place here Drop here Tap where it should stand Rank up Sell Move Sold: +{n} Moved Moved: tap to flush Drag towers to move them for free Scrubbed by hand No hand scrub left Flushed Empty: tap to flush Leak! Taint spread Split! Lucky ping Hand scrubs All clear {n} caught in a row +1 hand scrub Dispatch drone New: armored values take three tags, tanks six New: cloaked values and mimics, seen only near a tracker or sniffer New: splitters, swarms, and dashers New: carriers, phantoms, and encrypted values a sniffer must open New: jammers freeze towers, leeches drain them New: healers undo the tags around them New: bombers drain the towers around them Rootkit scrubbed Trojan revealed Worm scrubbed Trojan scrubbed Spectre scrubbed Keylogger scrubbed Recording Power glitch: buffers drop Firmware update: towers flushed Leak alarm: tainted values rush Audit: hand scrubs refilled Fog: values look alike Worm Trojan Spectre Rootkit Keylogger Segment by segment Looks clean until it doesn't Never on the wire you think Owns the die Records every tap Tag my tail all you like. Wave me through. I'm clean. Which wire? Wrong one. I was here before your towers. I saw that tap. And that one. Cut at the head. Unmasked at the port. Pinned down. Evicted from ring 0. Log wiped. Scrub the head first: the segments are armored while it lives It slows down once revealed: pile on then It is solid right after a jump: tag it then It heals from its swarm: scrub the swarm first It jumps to where you tap and records for a moment: tap near your towers Rootkit heals from its swarm Decrypted Blast: towers drained Ranked up Top rank already Veteran +{n} bits Master key: every tower flushed Patrol drone Deep buffers Boot camp Extra glove Quick flush Spare port Bulk order Lucky ping Port guard Overclock Self-flush Cold hands Bounty Vault Antenna Vault: no life lost Drill Sniper doctrine Flush shock Gatling doctrine Quick hands Toll Full refund Seed money Jam proof Deep tag Free relocation Alarm dampener A drone that patrols, tags and flushes. Towers hold one more tag. Towers reach farther. One more scrub charge. A flush is instant. One more life. Towers cost a quarter less. More loot, and a gift every ten seconds. A guard at each port scrubs one value per wave. Towers tag a quarter faster. An empty tower flushes itself after six seconds. A scrub slows the values around it. Loot drops twice as often. The first leak of a wave costs no life. All towers reach a little farther. Towers become veterans sooner. Long reach, slower tagging. A flush slows the tainted values nearby. Fast tagging, shorter reach. Charges come back faster. A quarter more points per catch. Selling a tower returns its full price. Points at the start of every wave. Jammers cannot jam your towers. Armored values need one tag less. Moving a tower keeps its tags. Alarms are over in half the time. Port guard caught it Towers Hand Crew Values in {n} s Keen eye Deep pockets Big buffers Steady hand Bargain All towers reach a little farther. 150 points, right away. Towers hold one more tag. Charges come back faster. The shop costs 10% less. Golden value: tap it Golden value caught Armored value Tank Cloaked value Mimic Splitter Swarm Dasher Carrier Phantom Encrypted value Healer Jammer Leech Bomber Hound Auditor Courier It runs the wires and barks at cloaked and disguised values, which slows them It refills the emptiest tower every so often It collects the loot for you {name} joins the patrol Woof: revealed Audited: refilled

Assertions Combo Bound Traces left Budget Unroll the trace. Arrow keys or a tap beside the trace change lane. Space or a tap on the trace hops. Hold Down to brake. Tap beside the trace to change lane, tap the trace to hop. Hold Brake in the frame to slow down. Out of traces. Traces lost Bound {n} of {m} Unreachable state Counterexample squashed Bound {n} of {m} proved All bounds proved. 10 bounds to prove New: wormholes New: bound walls with one gap New: spurious counterexamples, harmless New: state explosions Solver timeout: −1 trace Caught by a counterexample Spurious Lemma: shield up Cover point Wormhole jump Hop Brake Next +{n} s State explosion Solver hint: the safe lane glows Deadline: budget drains fast Lemma rain Counterexample Loop Rival solver Abstraction State explosion Hop into its lunge to hurt it Hop through the ring as it sweeps by Prove what it is about to steal, right under it Cross it while it is abstract, or hop through Every assertion proved contains it Twins Frenzy Four states Double loop Leaves a trail Calls counterexamples Wider, with a gap Collapse Chain reaction Meltdown {name} joins the run {name} level {n} Rebooting Proved Decoy: counterexample squashed Oracle: solver thinks Counterexample refuted Loop broken Rival outrun Abstraction refined Explosion contained The trace that fails Round and round Faster on every assertion Three lanes, no states Two to the N One path is all I need. Every cycle, the same states. I'll prove it first. Too coarse to catch, too wide to pass. More states than you have cycles. No path left. Broken for good. Proved first. Refined away. Bounded. Weak spot Stolen Outrun Lunge! Nondeterminism Nondeterministic turn New: counterexamples hunt the trace Ghost pass Pruned Prune now Spare trace Clock divider Ghost pass Pruner bot Long hop Magnet Solver budget Lemma library Prover Decoy trace Oracle Witness Invariant Checkpoint Cover bounty Lens Quick hop Tenacity Checkpoint: budget restored Quick turns Deep bound Shallow bound Storm anchor Proof hammer Rally Wide trim Quick trim Lucky rows One more life. The trace runs slower. The hop carries farther. Nearby assertions drift into your lane. Five more seconds of budget. A shield, kept between bounds. One crash forgiven per bound. A trim that clears the lane ahead. A prover that collects assertions ahead. A decoy two lanes over that squashes bugs. An oracle that slows time when danger comes. A witness behind you that gathers lemmas and cover. A shield of its own every twenty seconds. The first timeout of a bound is forgiven. Cover points are worth double. See through nondeterminism. The hop recharges faster. The combo survives a crash. Lane changes are quicker. Assertions worth half again, but faster. Slower, but assertions are worth less. State explosions are over in half the time. Bosses take half again as much damage. Companions reboot twice as fast. The trim clears the lanes beside too. The trim recharges faster. Golden assertions come more often. Invariant: shield up Solver Trace Party Golden Golden assertion proved +1 ghost pass Slow clock Spare trace Sharp turns Lucky Bargain The trace runs slower. One more life. Lane changes are quicker. Golden assertions come more often. The shop costs 10% less. New: flickering states, safe when hollow New: walls whose gap moves one lane New: fast sliders sweep two lanes New: double walls, thread both gaps Sliding state A golden assertion!

Refreshes Close calls Bank Time Flips left Hold the rows. Tap a row or press its number to refresh it. Out of refreshes, a tap queues the row. Space for a burst refresh. Tap a row to refresh it. Out of refreshes, a tap queues the row. Burst refresh is in the frame. Bits flipped. Close calls Refreshed Bit flip! Close call {n} close calls this bank +1 ECC correction Burst refresh New aggressor: {name} Hammer Sprinter Crab Pair Stealth hammer Hops at random Quick hops, light blows Walks row to row, hits hard Hammers one row from both sides Hides after every hop Fan Canary Sentinel It cools the hottest row It sings when a row runs hot and pecks the stealth off hammers Hammers that land beside it bounce off {name} joins the bank Bank expands: +{n} rows Next: {name} · {s} s More rows Golden row Chirp! Bounced Recharging No refresh left Queued {n} Unqueued Bank {n} of {m} held Memory held. 10 banks to hold Bank {n} of {m} New: double-sided hammering New: the heat reaches two rows away New: aggressors hide after hopping ECC corrected TRR bot refreshed a row Hammer King evicted The Press evicted Phantom evicted Thermal spike Cooling burst: tokens refilled Voltage droop: refreshes cost two ECC scrub: +1 correction Row remap: two rows swapped Golden row: keep it cool Golden row kept cool Golden row lost Hammer King The Press Phantom Hammers hardest Three rows at a time Seen only when it strikes Every row is mine to hammer. Why hit one row when I can hit three. Refresh what you cannot see. Dethroned. Pressed flat. Made visible. Shielded It is open right after it lands: refresh a row beside it then It rests after each slam: refresh a row under it then It shows when it strikes: refresh a row beside it then Bot sweep Extra token Fast charger ECC Turbo burst Spare bank TRR bot Sensor Cooler Scrubber Long queue Overdrive Armored rows Heat shield Heat sinks Droop proof Hot hands Stun hammer Slow burn Deep chill Sink power Early warning Golden nose Quick sweep Twin sweep Boss brake Speed limit Chain refresh One more token. Tokens come back faster. One more bit flip absorbed per bank. The burst recharges faster. One more life. A TRR bot that cools the hottest row. See where the hammers land next. Rows heat ten percent slower. An ECC charge every fifteen seconds. Queue up to five rows. The burst freezes the hammers for two seconds. Weak rows take a little more heat. Thermal spikes are half as hot. A heat sink already installed. A droop no longer doubles the cost. Fast tokens, but rows heat a little faster. A refresh under a hammer stuns it. Rows heat slower, but tokens come back slower. A refresh cools the neighbours twice as much. Heat sinks cut heat to a third. Rows warn earlier. Golden rows are worth double. The bot sweeps more often. The bot cools one more row per sweep. Bosses hop slower. Hammers hop slower. Quick successive refreshes pay extra. Controller Memory Bots Heat sink installed Cool hands Thick walls Spare fuse Quick burst Bargain Tokens come back faster. Rows take a little more hammering. One more life. The burst recharges faster. The shop costs 10% less. New: a hot spot heats its row New: drifters glide from row to row New: refresh storms make refreshes free New: twin hammers strike in lockstep Drifter Glides row to row, refresh its row to turn it back Twins Strike as one, a refresh between them stuns both Refresh storm Refresh storm: refreshes are free A golden row!