There have been tons of cool mind-bending platformers over the past year, and to add to those here’s Specter Spelunker Shrinks. This Unity-based game uses size as its major trick, and it’s a pretty cool one.
Like most platform characters, Specter Spelunker can move left, right and also jump. With slightly sloppy movement and monochrome retro graphics, that would add up to not much of a game, but using the up and down buttons you can grow and shrink Specter Spelunker. This grow/shrink mechanic makes all the puzzles in the game, and is really entertaining. There seem to be no limits to how big or small Specter Spelunker can be, except his environment, and the environments change in scale a lot!
You need the wonderful Unity plug-in to play Specter Spelunker Shrinks, and it can be finished well within an hour, so give it a go!