Top 10 Ideas for a Super Mario & Sonic the Hedgehog Crossover
Two iconic video game characters, one crossover, or two, or even more.PLOT: Bowser & Dr. Eggman combine their worlds together into one. Both Bowser & Dr. Eggman plan on ruling the combined world together & defeating Mario & Sonic. Mario & Sonic must go through stages that they once traveled before from their worlds, collect the Chaos Emeralds, and rescue their friends.
The game includes levels from Super Mario Bros. (1985), Super Mario Bros. 2 (The Lost Levels), Super Mario Bros. 3, Super Mario World, Sonic the Hedgehog (1991), Sonic CD, Sonic the Hedgehog 2, and Sonic 3 & Knuckles. This game is a classic platformer that has everything you love from the classic Mario & Sonic games. I was thinking that Super Mario Bros. 2 (USA) should be in the game as well, but only as either a bonus stage, or as DLC.
It'd be like Generations but instead of Classic and Modern Sonic, it would be Mario and Sonic gameplay. Maybe make the Mario levels structured either 2D like the classics or 3D like 3D world and then the Sonic levels something like maybe the Classics, Adventure games, or the boosting formula. That would be pretty killer if this was all done well.
It would be fun to see the character from the different franchises interact with each other.
If this happens, I hope there are some elements from Sonic R. Seriously, think about what would happen if Mario Kart crossovered with Sonic R.
Both games accurately describe mine, as well as a number of other 2000's kids' childhood!
You want Super Mario Galaxy 3? You want Sonic Colors 2? Well, how about a Super Mario Galaxy/Sonic Colors crossover?
Because the Olympic Games series wasn't enough.
Sonic Heroes had these.
1. Team Sonic (Sonic, Tails & Knuckles)
2. Team Rose (Amy, Cream & Big the Cat)
3. Team Chaotix (Espio, Vector & Charmy)
4. Team Dark (Shadow, Rouge & E-123 Omega)
For Mario, let's have these teams.
1. Team Mario (Mario, Luigi & Yoshi)
2. Team Mushroom (Toad, Toadette & Toadsworth)
3. Team Princess (Peach, Daisy & Rosalina)
4. Team Kong (Donkey Kong, Diddy Kong & Funky Kong)
That would be cool! If the controls get polished.
Remember the Sonic Storybook series? Sonic & the Secret Rings, and Sonic & the Black Knight took place in storybooks. This one shall be the third installment of the storybook series.
Preferably, it would follow the footsteps of Super Paper Mario. I enjoyed the original 2 and Sticker Star(even though it was different in many wrong ways), but Super Paper Mario just felt the most enjoyable to me.
During the day, Sonic is a hedgehog. During the night, he's a werewolf/hedgehog hybrid, a werehog. For Mario, he can use power-ups. That's why I had the subtitle be "Powered Up".
Mario POWER-UPS
1. Super Mushroom (Various Mario games)
2. Super Star (Various Mario games)
3. Phoenix Suit (This is a made up Mario power-up.)
4. Frog Suit (Super Mario Bros. 3 & Paper Mario: Sticker Star)
5. Carrot (Super Mario Land 2: 6 Golden Coins)
6. Blooper Suit (Made Up Mario Power-Up)
7. Blue Shell (New Super Mario Bros.)
8. Penguin Suit (New Super Mario Bros. Wii & U)
9. Super Acorn (New Super Mario Bros. U)
10. Super Bell (Super Mario 3D World)
11. Polterpup Bone (Made Up Mario Power-Up)
9 out of 11 listed are animal power-ups. 3 out of the 9 animal power-ups are made up & should totally be introduced.
While fighting Eggman/Bowser Eggman uses the 7 emeralds and Bowser uses the crystal stars. and accidently creates a parrel universe to each world. Then they talk and stuff, then popple wants revenge on Mario and Luigi for beating him before, then he finds Wario and Waluigi robbing a toad, and Nack the weasel hunting for emeralds, and talking to them they agree to join. Also, some of the Koopa's have been robotised by Eggman. the bosses with emeralds/crystal stars Mario: Koopa bros, crystal king, boulder geist, shadow Mario, fawful, X-nauts, dark star core. Sonic: egg emperor, earth dragon, mecha sonic, chaos, egg dragoon, mecha sonic 2.0, Dark Gaia. And other mini-bosses around the game. The final bosses is when Eggman makes the death egg robot 3.0 and bowser turns into Giga Bowser people around the world cheer for them. But it turns out the power of the Emerald and crystal stars combine made a monster with the power of both combined. so they both turn into super form and defeat the ...more
Remember that GBA Sonic game, Sonic Battle? How about we have a Mario & Sonic fighting game like it?

Come on people! If it came to Mario VS Sonic, then Sonic would win before Mario could do anything, but a Luigi VS Tails game would be cool! (I only put this on the list because they are probably my two favourite characters ever!)