Yes — over the hill has crossplay, and the developer confirmed it directly. The reply came in a Steam community discussion on March 15, 2026, where question nine was answered in a single word. The recorded crossplay platform list is PlayStation 5, Xbox Series and Nintendo Switch 2, sitting on top of PC. Online co-op supports up to 4 players.
The important companion fact is that local multiplayer is not supported. The developer said so on June 27, 2025: "Local multiplayer is not planned at the moment." So cross-platform online co-op is in, split-screen on one screen is out.
The developer's exact confirmation
The crossplay answer came from a numbered question in an official Steam community discussion thread, which is the kind of direct developer response that carries more weight than a marketing line or a store-page feature bullet.
"9. Will there be cross-play? Yes." — developer reply, Steam community discussion, March 15, 2026
The thread is on the game's own Steam community page, so the answer came from the developers rather than a commenter. The community wiki records crossplay: true and carries the three console platforms as the crossplay platform list, citing that same reply as its source.
Which platforms are in the crossplay list
The confirmed list covers PlayStation 5, Xbox Series and Nintendo Switch 2. Add the PC release on top of that and you have the full set of platforms that can share a session. Every one of those console versions is planned for 2027, with no exact date attached to any of them.
The console wave was announced as a single group covering PS5, Xbox Series X|S and Nintendo Switch 2. Crossplay being confirmed across the same three platforms that were announced together means the feature covers the entire console lineup rather than a subset of it.
What crossplay means in practice
Concretely, it means a PC player and a console player can be in the same convoy, on the same trail, in the same session. When PC launches on October 14, 2026, that group is PC-only for the better part of a year, because no console version exists yet to join from. Once the hardware versions arrive, the same group can be joined by console players without anyone switching platform.
That is the practical reason the staggered console release matters less than it first appears. The alternative design — no crossplay — would have split the community into separate pools per platform from day one. With crossplay, the PC community does not fragment, it just waits.
Local couch co-op is not planned
The other half of the multiplayer picture is local play, and the answer there is a flat no. The developer stated it in the same community discussion format used for the crossplay question.
"Local multiplayer is not planned at the moment." — developer reply, Steam community discussion, June 27, 2025
The community wiki records local play: false on the strength of that reply. Separate coverage is equally direct about it, noting that local co-op will not be available at all. As of August 10, 2026, split-screen and same-screen play were still unannounced. So if you were planning to pass one controller to a friend on the same couch, that plan does not work.
The multiplayer features behind crossplay
Crossplay is the headline, but it sits inside a broader multiplayer feature set on the store page. Alongside 1–4 player online co-op, the Steam page lists Steam achievements, Steam Cloud, statistics and family sharing, and the community wiki records save data on Steam Cloud and Xbox Cloud. Online play is recorded as supported with a four-player cap and co-op as the mode.
There is no-versus mode in that list, and no separate ranked or competitive option is recorded anywhere. The people count is the ceiling rather than a minimum, so a two-player session is equally valid — which suits a game about taking a trail slowly rather than racing anyone.
What the co-op actually is
The multiplayer is 1–4 player online co-op, and it is co-operative rather than competitive. There is no-versus race, no lap times and no finish line, which follows from the developers' own framing of the game as a driving game rather than a racing game. The modes listed are co-op only, and the camera perspective is a bird's-eye view with direct control.
Because the model is shared rather than competitive, the group is pulling in the same direction on the same terrain. Three vehicles ship at launch, expanding to roughly 20 through updates, so a four-player group is not limited to a single vehicle for long. Recovery equipment matters more when four people are stuck: planks for bridging, winches and portable winch anchors, plus a grappling hook.
Terrain, time of day and weather apply to everyone
The systems that make runs unpredictable are shared across the whole group, not per-player. Dynamic weather and a full day/night cycle mean the same stretch of trail can be a different proposition depending on when you drive it and what the weather is doing. Realistic terrain deformation means the ground visibly changes under load, and a track that worked an hour ago may not now.
With four players on one convoy, one vehicle bogging down affects everyone behind it. That shared-state design is a big part of why co-op is the only multiplayer mode on offer — the challenge is the group getting through the terrain together, not one driver beating another to a line.
When crossplay can actually be tested
Here is the catch. Crossplay is confirmed on paper, but the console platforms it covers are all slated for 2027, and crossplay across PC and console is one of the confirmed features of those console versions. So during the PC-only period there is no second platform to cross over from, and the feature cannot be exercised until the hardware versions exist.
What remains 待确认 is everything around the edges: whether there are crossplay-specific settings or matchmaking partitions, and whether crossplay switches on automatically when the console versions launch or requires anything from the player. Neither has been stated in the available material.
Also 待确认 is whether local multiplayer could still be added later. The developer's wording — "not planned at the moment" — leaves the door open without committing to it, and nothing since has reversed it.