on what engine game creator whould you recommend to create my firsth fangame and the most giant adventure ever with 14 zones 2 giant acts with hard bosses and some 3d sections (mostly the slide sections and plane sections) with the lost world styled special stages with bonus stages like circus and a epic adventure
That's not an obvious question...
Fusion + Sonic Worlds Delta (the one I used) is quite good and allows for an impressive level of customization if you want to invest time with it, but doesn't do 3D by itself.
There are newer sonic engines available but I'm not familiar enough with them, so I can't really provide recommendations. Jump to sonicfangameshq, they should be able to provide better suggestions.