250. Peepar Time (Sanritsu Denki, Famicom, 1990)

Peepar Time is the only Famicom game from publisher Sanritsu Denki. It stars a little egg shaped robot (who I  assume is named Peepar) with a red hat who is not controlled directly by the player. Instead, you can swap around the tiles that Peeper is walking non to divert his path away from enemies and guide him to the goal area.

If tiles are pink, you cannot move them, but if they are blue you can, with each tile you select being swapped with an empty space. Peepar walking across a tile changes its color from blue to pink, and vice versa. If Peepar walks into an enemy or off the edge of the map into water, you lose a life. While the mechanics are confusing at first (the first level will literally beat itself in about 10 seconds if you do not touch the controller), some time with them makes playing the game with save states a fun challenge, though playing with the lives system as intended is a bit punishing.

That said, even with infinite lives, a rudimentary grasp of the mechanics will only get you so far in Peepar Time. In addition to the threat of enemies and falling off the map, Peepar also has a limited amount of oil that is constantly draining, and once he runs out, you have to start the level over, though each level has at leas tone oil refill as an optional pickup. So speed becomes just as important as not placing an incorrect tile, which does help the game to have some tension, though I think I would have played it for a little longer if it didn't have any kind of timer.

4/5, a clever, difficult tile swapping/path drawing mashup