Impossible Mission E020: eighth piece and staircase return

Latest milestone: eight puzzle pieces retained

8 of 36 pieces, 0 of 9 password letters. The game is still incomplete. E020 searches all three vending machines in room26: the right machine is empty, the middle machine yields the eighth fragment, and the left machine replenishes a SNOOZE code. The agent returns to the original corridor using the left and central staircase. All seven earlier inventory masks are preserved. SNOOZES: 1; LIFT INITS: 4. Final HUD12:40:10 shows no new ten-minute death penalty; two earlier ordinary deaths remain in the laboratory chain.

YouTube | E020 report and evidence

The50.36-second silent video explicitly labels four laboratory source episodes. Each run begins with one private snapshot and has zero intermediate restores. Selected prefixes omit later failed development attempts; all source changes are labelled. This is a laboratory milestone, and normal-boot whole-game completion proof remains outstanding.

The ordinary SNOOZE freezes the two observed brown robots and the black sphere. The descent skips floor98, reaches122, then170. Returning along the left and central platforms avoids the sphere obscuring the actor on the right staircase. The retained checkpoint has32 distinct layouts observed across70 room entries. Gameplay uses rendered RGB, ordinary actions and observed memory. Separate emulator raster diagnostics account for timing. No gameplay RAM coordinates, hidden contents, trainer or memory writes are used.

Route and verification

The terminal stops the two observed brown robots and the black sphere. The descent reaches the three vending machines, yielding an empty result, a new fragment and a SNOOZE code. Returning through left and central platforms keeps the avatar visible; the right staircase passes beneath the stationary sphere.

The Pocket Computer scan preserves all seven earlier piece masks and adds one. The two code counters are read from actual coloured glyphs. Source changes are labelled, with four initial laboratory snapshots and no intermediate restores inside any source run. The game remains incomplete, with no password letter solved.

Evidence and accounting

Full report | Proof summary | Replay metadata | Frozen sources | Inventory | Video audit

The50.36-second replay contains730 selected actual RGB observations. Full video decode and64 source entries passed verification. The complete four source runs charged143.478270 execution wall seconds; this includes unused later suffixes and excludes other campaign trials. No agent GPU allocation. No ROM, private snapshot, raw RAM dump or executable is distributed.

E018 seventh fragment | E001 first controller | Pengo | Pleiads