Help identifying a game

[GrunnersMac]

I'm trying to track down a game I used to play in the 1990s, have exhausted Google, and wondered if anyone here could help?

I played it on a PC, back in the days of 8 inch disks.
The view was 2D, with the level contained within the one screen (i.e. no scrolling)
You controlled a pair of eyeballs, moving around a level collecting lollipops (I think).
You could build your own levels, using a large variety of different tiles and blocks.
The file to run the game was called cnstr.exe or cstr.exe I *think* - This leads me to believe the game was likely called Constructor, but the only game I can find by that name is very different (more of a Sim City game by the looks of it).

Not a huge amount to go on I know, but I can't be the only one who enjoyed this game!

Cheers in advance to anyone with any clues.

[SparTonberry]

I think 8 inch disks would've been outdated by the 1990s (I've never even seen one! And I had my first PC in the 90s).
Perhaps 5.25 inch, which while I think they were falling in popularity to 3.5 as the standard, were still present.