Nostalgia

Nostalgia is a level by Jeyzor.

Description
This level is retro-styled, but there is a lot more action included into it. At many points, the level appears to be "gltiching", switching back and forth several frames at times, making it difficult.

Gameplay
The level starts with a cube, all on the standard green retro background. However, red and blue colors have been added to the sides of the obstacles, as if in 3D. When the low detail mode below is not activated, there will also be a whole mass of vertical lines behind. This section has no glitching effects yet.

Next is a mini ship, with hallway passages, and the map appears to move back and forth at times, but smoothly. The player must be careful in maneuvering the ship.

Following is another cube, with a old television screen-like effect around it. This part has really unexpected and hard glitches: the frames change unexpectedly, repeat themselves, and at one instant even goes backwards.

Finally, a mini ball follows, and the mini ball is covered with a ball-like shape. At the same time, the background becomes a mass of triangular hazards, and the play area also shifts regularly, much like a retro game. This part also glitches occasionally.

Trivia

 * Right at the start of the level there is a key with "Low Detail Mode" under it. When collected, it removes some effects of the level, presumably to make it easier to complete. The glitching effects are still there though.