Floor Is Lava: Developer Diary | Debugging by Video and the First Trailer (July 8, 2026)

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Wednesday, July 8, 2026


Floor Is Lava app icon
Get Floor Is Lava on Google Play

Mapping the coin economy

Had Claude generate a full flow chart and a 12-scenario table covering every way a phone’s guest account, a new guest account, and a logged-in cloud account could interact: including a duplication edge case (logging out of a guest account, then creating a new one, could carry coins across). Fix: new guests always start at zero.

The swing-platform bug, solved by video

Genuinely clever debugging today: isolated a stubborn bug: jumping from a swing platform onto a purple electricity platform teleports you back to the swing: by uploading a recorded promo clip of it happening straight to Claude, which can now watch video. The root cause: every other platform type had a specific line resetting the “on swing” flag on landing; purple was the one platform missing it. One-line fix.

A second, related bug (swing to tipping platform) surfaced from the same root cause and was fixed the same night, alongside a new in-game bug-logging tool: a green worm icon you tap to log exactly what just happened.

A rookie mistake, caught

Discovered the APK being tested was built from version 280: more than 40 versions behind the current v312. A genuinely humbling find, and a reminder to double-check which build is actually shipping before troubleshooting phantom bugs.

The first trailer

Assembled a 36-second trailer from recorded clips (including a cheat-assisted run through the spaceship level) and launched a new YouTube channel, Gamer’s Top Shelf, plus a Facebook business page for the game.

Watch the trailer: Floor Is Lava is coming to Android! (YouTube)

Photos from today

Floor Is Lava screenshot; 2026-07-08

Read what happens next in the dev diary: the next entry.

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