blobwars (An SDL2 based platform game)

Blob Wars: Metal Blob Solid Episode 1 is a platform game in which you
have to collect MIA (missing in action) blobs scattered around many
areas. There are other things to collect, keys to open doors, bosses
at the end of different levels, etc. You can also re-visit levels to
collect things you missed earlier.

This game was originally created by parallelrealities.co.uk
and now is produced by Perpendicular Dimensions