Sorry for this inconvenience, but don't worry: recently I made modules system to allow customizing of the render modules, so, next update I'll fix that and you (and other sad people with old video card) are will be able to play PGE Engine again. Also this system will allow play PGE Engine on OpenGL-less computers with using of software render (that a backup module which will be used for case when impossible to use OpenGL).
OpenGL 3/4 are has good API for shaders to allow game makers do various wonderful effects. I wasn't used it yet, but I plan for that. Therefore PGE is going to be not only for a simple games: will be possible to do various advanced stuff too
Anyway, to don't break compatibility, those things for older OpenGL's and for software version are will be limited, but be still available.
Also, LunaLUA-SMBX uses OpenGL 3 too, but for case if impossible to use it, GDI mode automatically enables.
Note: Because OpenGL 2 specification is not supported on Android which uses OpenGL ES, based on OpenGL 3 (because Android version of PGE Engine is planned), therefore OpenGL 3 is needed for that. Anyway, for Android builds I'll disable building of OpenGL 2 module because unsupported. Desktop versions are will have that.