v1.0 = no events, no physics, no shaders/shadows, more bugs, not as many bricks (still were a good selection of them), no tutorial
I could go on but v0002, AiO-R, BLM, RTB v1.032/v1.045 and TBM/DTB were pretty fun until the communities 'went down'. I am glad the retail version is getting more popular since it's getting better than all of them combined.