Retro Replay Review

Gameplay

Experiment 13 opens with an immediately understandable bargain: get through a room without dying, then move to the next one. Grey squares are safe, red squares kill you, and your basic toolbox is running, jumping, and wall jumping. That clarity is a strength. You can look at a room and quickly understand the danger, even if figuring out the safe route is another matter entirely.

The sequel’s key twist is gravity control. Arrow-marked stages can redirect gravity in all four directions, not merely up and down, so a wall can become your floor and a formerly impossible jump can become the obvious next move. Some gravity changes also shift pieces of the stage around. That gives the rooms more bite than a straightforward precision platformer: you are not only executing jumps, but deciding when changing the rules of movement will open—or close—your path.

Fifty stages gives the concept enough room to develop without asking you to commit to a huge adventure. Frustration will naturally set in when a room’s solution depends on getting both your route and movement right, especially since red squares offer no margin for careless contact. But the rules are direct enough that failure points back at the room and your choices rather than burying you in clutter. If you enjoy stripping a platforming problem down to its essentials, that clean pressure is the reason to play.

Graphics

The visual language is as blunt as the challenge: grey squares mark safety and red squares mark death. In side view, that color coding keeps the crucial information in front of you while gravity arrows tell you where a room can turn.

Story

Experiment 13 frames its rooms as another deadly test for inmates trying to win their release. Experiment 12 was apparently a success, and this follow-up raises the number rather than softening the conditions.

That is a spare setup, but it fits the game’s structure. Each room feels like a contained trial: reach the exit, survive the hazards, and earn the right to face the next one.

Do not come in expecting the premise to carry a big narrative. The story mainly gives the repeated escape attempts a little extra edge, turning abstract hazard rooms into a series of increasingly hostile experiments.

Overall Experience

Experiment 13 knows exactly what it wants to be: a concentrated sequence of hazardous platform-puzzle rooms. The immediate controls and stark safe-versus-deadly layout make it easy to start, while the gravity changes give it enough of a mental hook to distinguish it from a basic jump-and-dodge course.

Its strongest moments should come when a room first looks sealed off, then a gravity shift reframes the whole space. That is the satisfying loop here—spot the implication of an arrow, rethink which surface counts as ground, and make the move.

Give it a chance if you want a compact, demanding challenge built around route-finding and platforming under strict consequences. Skip it if you need a broad story or a relaxed ride; this is built around 50 chances to prove you can find an exit without dying.

Retro Replay Score

7.2/10