Index of acronyms

[Ñuño Martínez]

There seems to be more engines and frameworks than actual games.

Yep. And some of them seems unmaintained.

Anyway, you may want to add Allegro.pas, and may be later MinGRo.

[Super Vegeta]

SDL | Visual C++

What? SDL is written in C.

I guess you could separate SDL into SDL1 and SDL2. SDL1 support comes out-of-the-box with FPC. For SDL2, ev1313's units (link) can be used.