Game Libraries Research
- Entirely point-and-click
- No programming required
- Free version is extremely limited
- Designed to build 2D games
- Online networked API
- Fully free
- Perhaps the best option
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- Completely free
- More geared towards 3D
- Geared entirely towards 2D games
- Probably the other contender for best option
- Completely free
- Designed for 2D
- Still in relatively early development
- Probably the most difficult to use in this list