I see. Personally I wouldn't have bothered with trying to support versions that old, but that's just me. I mean, if you can't afford a newer Delphi version, why wouldn't you just use FPC/Lazarus instead? I'd rather quit programming forever than have to use Delphi 7 in this day and age...
It's an abandoned project (the developer seems to have just vanished) built ENTIRELY around outdated OpenGL functionality. I don't doubt you get 60 FPS in what are probably relatively simple 2D sprite games, but that's just your CPU brute-forcing the immediate-mode rendering. If you tried to scale ZenGL up to anything relatively complex you would hit a brick wall, trust me.
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