These days it seems like every game character just has to crossover into another’s game. Just recently we had a bunch Sub-Zero showing up in Injustice 2, Link in Mario Kart 8 and Shovel Knight popping up… well everywhere. And it’s not like this trend is going to end anytime soon, not with games like Mario + Rabbids: Kingdom Battle, Marvel VS. Capcom: Infinite and Final Fantasy XV getting in on the crossover action. So for this week’s top 10 we’ve decided to countdown the best crossovers in gaming history! The only rule we have is that more that one company has to be involved, so cameo appearances don’t count!

10 – Mario & Sonic at the Olympic Games

The longtime rivals’ first game together may not have been the platforming adventure we are all hoping to get but Mario & Sonic at the Olympic Games is still a solid mini-game collection that perfectly encapsulated the Wii era of motion gaming. And while the game’s various sequels were technically better games, it’s hard to argue with history, and having the Mustachioed Mario and the Blue Blur together after years of rivalry is enough to get your name on this list.

9 – Project X Zone

Combining the worlds of Sega, Capcom and Bandai-Namco into one solid tactical RPG, Project X Zone was the game we never knew we wanted but loved anyway. With deep and fun gameplay the game managed to keep players entertained throughout its 70 hour story. The one big downside though was that the game’s story made no sense whatsoever, but I guess that what happens when you try to bring so many characters from so many different game worlds today.

8  – Heroes of the Storm

Blizzard is not known for its huge stable of franchises but the old-saying of quality over quantity more than applies here. Bringing the universes of Warcraft, Starcraft, Diablo and smaller Blizzard series into one proved to be a coup de grace for the company and viable alternative for gamers who had grown bored with similar games like DOTA and League of Legends. Blizzard has also been working on keeping the game updated and fun to play for casual and competitive players alike.

7 – Battletoads & Double Dragon

Two of the biggest names in beat ’em ups during the late 80’s and early 90’s teamed up for a dream crossover for fans of beating up on baddies. The biggest plus the in the game’s arsenal is the smooth gameplay and actually normal levels of difficulty. Seriously, this is probably the only game with Battletoads in the title that human gamers can actually beat.

6 – Pokémon Conquest

No one. And I mean no one could have predicated how this game would even work, let alone know that it was going to be one of the freshest, most imaginative and greatest Pokémon games to hit the Nintendo DS. Talking the world of Pocket Worlds and mixing it with the strategy combat of Nobunaga’s Ambition may have seemed like an odd choice but the result is a game that many people definitely need to play.

5 – Street Fight X Tekken

The first of several fighting games to make this list (what can I say, they make for a good crossover), Street Fighter X Tekken was like a 90’s kid piece of fanfiction come to life. But the game’s so much more than a magical mashup of two of fighting game’s biggest titles, since both series’ have very different gameplay styles it would seem like it would be impossible to mash-up the two yet the developers made it happen and the result was one of the most creative and fun fighting games of the past decade.

4 – Super Smash Bros. for Nintendo 3DS / Wii U

What started out as a celebration of all things Nintendo has become a series that is just as comfortable introducing third-party characters into the mix. It all started with Sonic and Snake’s inclusion in Super Smash Bros. Brawl but reach full crossover status on the 3DS and Wii U title with Mega Man, Pac-Man, Sonic, Ryu, Bayonetta and Cloud all joining the fight. And while nothing’s confirmed as of yet, rumors are swirling that Smash will be making its way onto the Nintendo Switch in the near future and hopefully we’ll see some more third-paryy characters making the jump over too… maybe Shovel Knight? Please?

3 – Soul Calibur II

Now this was cool. Soul Calibur II released on three platforms, the PlayStation 2, Xbox and Nintendo GameCube and each of these version included a special exclusive crossover character with Heihachi, Spawn and Link all coming to the game respectively. The series would continue this tradition of including special guests with each of its subsequent releases but none would be as awesome (well maybe Darth Vader) as the invited visitors to Soul Calibur II.

2 – Kingdom Hearts

I’ll be honest, when I first heard about the Disney and Square Enix mash-up that would end up being Kingdom Hearts, I was very skeptical. ‘There’s no way this would work’ and ‘that sounds dumb’ would be things that I could be heard saying but time makes fools of us and I can honestly say that I was very wrong as this crossover proved to be one of the most successful in gaming history. Now if only they would hurry up and finish Kingdom Hearts III

1 – Ultimate Marvel VS. Capcom 3

The ultimate crossover. Featuring dozens of great characters, world-class gameplay and a legacy that is legendary among the fighting game community. Ultimate Marvel VS. Capcom 3 has everything you would want from a great crossover with both company’s properties being represented with love, care and respect. If the upcoming Marvel VS. Capcom: Infinite is even half as good as this game, then the series is in good shape indeed.

And that wraps up our look at the Top 10 Best Crossovers. Did you favorite make the list? Let us know on the comment section below.