These are the site's exploration games — you're not chasing a high score every ten seconds, you're finding your way through a real space. Two are 2D platformer runs; the other three are full 3D low-poly worlds you walk through with a third-person camera.
Haunted Castle — a two-level night-and-day courtyard
Haunted Castle sends you through a courtyard hunting keys past patrolling torches, at night — then, on escaping the first gate, the same structure reopens in daylight for a second, harder level.
Derelict Station — a spacecraft explored room by room
Derelict Station is a derelict ship you explore compartment by compartment, tracking down everything you need before the escape pod will activate.
Frozen Summit — a snowfield climb to a watchtower
Frozen Summit is a winter exploration run: cross a snowfield collecting ember shards, then climb a stepped watchtower to relight its beacon.
Treasure Trek and Jungle Quest — 2D platformer runs
Treasure Trek and Jungle Quest are both 2D side-scrolling platformer runs with a real destination in mind, rather than an endless scroll — jump, collect, keep moving forward.
All three 3D games share the same WASD-plus-jump, third-person camera controls, so once you've played one you already know how to move in the others. Full list on the Adventure category page.