2021 Was the Year of Weird Mobile Crossovers

Sonic is no stranger to the FOMO demon that is mobile game limited time events. He’s hung out with PAC-MAN, he jammed with Taiko no Tatsujin, and Puyo Puyo Quest… is also a thing. That happened. And I really, really wish didn’t.

Pictured above: A mistake.

Anyhow, SEGA went mad with Sonic guesting in mobile games left and right. Here’s the breakdown:

Ulala: Idle Adventure

Ulala is an idling RPG where you and three other pre-historic adventurers team up to travel many lands, grinding experience and taking on bosses in automated battle. You’ll incrementally upgrade your fighter with equipment, abilities, and animal friends. This was one of the few games I legitimately enjoyed my time with and continued to play regularly for six months. You get some pretty significant benefits chipping in about $5 a month. If you’re after event cosmetics, the cost is miserable, but if you just want to play the game, it’s pretty generous.

During the Sonic event, the blue boy himself has been thrown into this world by a portal, and he’ll need you to recharge enough energy to send him home by playing a very basic Sonic Dash-like minigame, and then inflicting as much damage to Eggman as possible. Your reward for completing tasks (and/or spending heaps of premium currency) is Sonic and Eggman cosmetics, the coolest of which is Eggman’s mustache, which lets your character pilot the hovercraft between encounters.

Fist of the North Star LEGENDS ReVIVE

I’m a bit of a Shonen Jump fan, and my heart leapt at the thought of just how profoundly asinine this would be. I was not disappointed.

Legends Revive is a gashapon (or gacha) character collecting RPG following the events of the Fist of the North Star manga and anime, where expert martial artist Kenshiro walks the wasteland of the post-apocalypse and punches brawny Mad-Max rejects until they explode into viscera. So yeah, perfect game to add Sonic to. There’s no context to why Sonic’s there. He just is, bringing along a bunch of music that either doesn’t quite fit the tone of the game, or fits it perfectly.

The game itself is a mess of a design. The RPG part is simple, just tap your characters in the order you want to attack, do it at the right time to maintain a combo, and occasionally pop off super moves. But there are so many menus and modes and stores and daily missions stacked on top of it. The menu is awash in icons, it’s barely navigable and incredibly disorienting.

It’s not a good game, not in the slightest, but it had me hooked for a solid month on the novelty of running through the story and watching an extremely overpowered Sonic go super with his 1980’s beefcake anime buddies as Live and Learn blares out my tablet speakers.

Dx2 Shin Megami Tensei: Liberation

I’ve seen that game’s title arranged about five different ways, so I don’t know what word order is supposed to be the most accurate anymore.

Sonic as a demon in an SMT Digital Devil-style world is conceptually funny, but the game just couldn’t hold my attention very long. Your avatar is conscripted into a war between two factions of fighters, each battling SMT style with digital demons on your phones. Much like the series proper, you’ll be recruiting, fusing, and building elemental combos with various demons, though this edition lets you recruit via gacha.

It isn’t bad. The visual style is very SMT, the characters can get a little wild, and boy is there plenty of story. But I think my hesitance just comes down to my lack of experience with the primary series. If you’re an SMT fanatic and don’t mind juggling your standard free-to-play complications, it seems like it has a touch more depth than you might expect from a mobile RPG.

Cookie Run: Kingdom

I’m mad that I like this game. It doesn’t deserve praise, but darn it, it has really solid production values, fun characters, and entertaining writing. It’s also EVERY irritating mobile game design wrapped into a single package. Not only is it a town-building timer-waiting resource-tapping slog, but it’s also a gacha-collecting RPG-incrementing money-dumping grind.

The Sonic content was pretty entertaining, but it was designed for players at a much higher level than you could likely get to in the brief time the event ran. You could get adorable cookie version of both Sonic and Tails, but only by exchanging rings for pulls from a specialty limited-quantity gacha. If you got seven Chaos Emeralds from it, you could unlock one of the two heroes, but it sure seems like that seventh emerald was rigged to be the VERY LAST item you’d nab from the lot.

The production value of the Sonic content itself is great, with Smith and O’Shaughnessey doing voicework for the duo. With the event’s town-building decor, you can fill your town with Green Hill palm trees and chili dog stands. The cookies are cute, and they can do anything that any of the other characters can… but if you wanted them to get you past the third stage of their special Green Hill Eggman Battle stages, you’ll be out of luck. The power requirement jump between each Sonic RPG stage was huge. But don’t worry, for only $20, you could get the big pack that might net you 60% of a Sonic. Or one of the dozens upon dozens of subscriptions and packs in their store. I’d legitimately love to see the story to its conclusion, but I just don’t think I have the patience, persistence, and fortitude to do so.

It was beyond unusual to get a continuous stream of Sonic mobile game guest appearances, but I predominantly have three takeaways:

First, the best crossovers are the ones that are just completely nonsensical and provoke the strongest dissonance possible.

Second, trying to grapple with three Japanese/Korean gacha RPGs across three months is both expensive and spiritually draining.

And finally, Puyo Puyo Quest currently has somewhere in the realm of 2500 characters and character variants, and many of them are deeply upsetting. The Sonic event from a previous year returned, and I got Ringo cosplaying as Shadow. The game is a worse version of Puzzle and Dragon. I’m ending this article with a picture of Arle dressed as Eva Unit 001:

Happy New Year, I guess?

The Sonic Stadium may link to retailers and earn a small commission on purchases made from users who click those links. These links will only appear in articles related to the product, in an unobtrusive manner, and do not influence our editorial decisions in any way.

Published by


A podcaster since 2008, GX originally founded The Spindash podcast, until joining Sonic Stadium's monthly Sonic Talk. He currently co-hosts the show and runs weekly streams on Stadium's Twitch channel at https://www.twitch.tv/sonicstadium


  1. whats with your distain for Puyo Puyo characters cosplaying Sonic and Shadow? its not the first time someone’s cosplayed Sonic and its not the first time Sega’s two biggest franchises has crossed over.
    Wierd take on your part.

    1. A combination of the saccharine inane over-written nature of Puyo combined with the unending churn of mobile FOMO development.
      Thank you, Mario Kart Tour, I do like your game, but no, I don’t really need Baby Mario dressed like a koala or Daisy dressed like a fairy.

Comments are closed.