Clair Obscur: Expedition 33 Invades Astral Ascent in Free Crossover

Ever wanted to see Clair Obscur: Expedition 33's best characters pop up in a pixel-art roguelite? Well, that dream just became reality. Astral Ascent, the acclaimed 2023 indie action roguelite, has received a rare crossover with Sandfall Interactive's 2025 GOTY sweep, Clair Obscur: Expedition 33. And by rare, we mean singular—there's been no actual game content featuring Clair Obscur characters or world elements until now.

The Expedition 33: For Those Who Come After update is live now and completely free for all Astral Ascent players. The only requirement? You need to have completed the main quest on base difficulty. Once you've downloaded the update, head to the new Campfire room, where you'll find some of Expedition 33's best characters waiting as special, themed summons.

Let's break down the roster. Gustave is a support-type companion who heals you and gives attack buffs, but he also has a devastating attack that charges up every time he's summoned. Maelle fights alongside you using a stance determined by your HP, shifting from attack to defense and unleashing a powerful attack that unlocks when she maintains the same stance for a while. Sciel is a card-based battler with mana regen, a basic strike attack, and a powerful attack, each triggered under different conditions.

Then there's Lune, an elemental spellcaster who syncs up with your own spell-using habits. As is starting to become a pattern, she gets her own powerful spell when you summon her enough times. Verso ranks up every time you hit an enemy and drops a rank with every hit you take, starting with an attack penalty and then building to a massive attack bonus as he ranks up. Finally, Monocco draws a random card from a set of five and unleashes a powerful monster summon based on the card he pulls.

But that's not all—there are also three new Expedition 33-themed rooms in Astral Ascent's crossover update. The aforementioned Campfire, the Lumière, where you square off with Petank and the Mimes with Lumière in the background, and the Gestral Village, where you face off against Golgra. Developer Hibernian Workshop says these rooms appear randomly before the final boss of each run, and you'll have the chance to pick between the Expedition 33-themed bosses or the usual Andromeda Bar. But choose fast—it won't come back this run, warns the dev.

"We've wanted to do this for a long time. Getting to work with Sandfall Interactive on this crossover has been one of the best experiences we've had making Astral Ascent," the Astral Ascent team says in a statement. "Clair Obscur: Expedition 33 is a game we fell in love with, like so many of you did, and this update is our way of paying tribute to it. Our biggest challenge was translating this world into our own pixel art, staying true to what makes these places feel alive while making them ours."

So, will you be diving back into Astral Ascent to experience this crossover? And if you haven't played Clair Obscur: Expedition 33 yet, does this tempt you to check out the GOTY winner? Let us know in the comments!