Free is cheaper than cheap
Before spending anything, check whether a free game does the job. Fortnite, Rocket League, Fall Guys, Apex Legends, and Overwatch 2 all cost nothing, all have crossplay, and all support a group tonight. If your group has not yet proven it will show up regularly, start there and buy nothing - the free hub ranks them, and free on Steam covers the PC options.
Cheap by group size
Two players. Portal 2, comfortably. Stardew Valley if you want something long-running rather than a campaign to finish.
Three or four. Deep Rock Galactic for co-op with real depth, or Rayman Legends for a local four-player platformer that anyone can play.
Five to eight. Human: Fall Flat and Terraria both scale to eight and both are cheap. Among Us handles even more. See large groups.
Why older games are the value sweet spot
Multiplayer games do not decay the way single-player ones do. A great co-op design is just as good five years later, and the only thing that genuinely matters is whether people still play it - which for co-op games you organize yourself, rather than matchmake into, is entirely up to your group.
That is why Portal 2 and Terraria remain top recommendations despite their age. You are not buying an inferior product at a discount; you are buying the same product everyone paid full price for, at a fraction of the cost, and the only thing you have lost is being early. For competitive games with live matchmaking the calculation is different - there you do need a healthy player base - but every paid pick on this page is one you play with people you know.
Where cheap becomes a false economy
Two traps worth naming. The first is buying a cheap game your group cannot all play - a bargain with no crossplay that excludes one friend has cost you the whole purchase, not a discount. Check platforms before price, every time. Our crossplay hub is the filter for this.
The second is buying several cheap games instead of one good one. Three discounted party games your group plays once each is worse value than one game they play twenty times. Pick the one that fits your actual group size and setup, and spend the rest on nothing.
The third is forgetting the console membership. A few-dollar game plus a subscription each is not a few-dollar evening, and on PC that line is zero - which is often the real reason the same game costs a group less there. Our free vs paid breakdown does that sum properly, and if the constraint is the hardware rather than the money, the low-end PC picks are the list to start from.
A third, milder note: watch out for editions. Older games often list several bundles at different prices, and the cheapest is occasionally a base version missing the co-op content or expansions that make it worth owning. Read what is included before checking out.
When to buy
Every game here goes on deep discount several times a year. On PC, wishlist on Steam and wait for a seasonal sale. On console, the platform stores run comparable sales. There is rarely a good reason to pay full price for an older co-op game - patience is the whole strategy, and it routinely halves the cost. If you are timing a purchase for late November, our Black Friday and Cyber Monday page lays out which product types dropped last year and which did not; and if the game is a present, the gifts under $25 and under $50 guides re-frame these picks for a gifter.
The prices shown on this page come live from Amazon and change frequently, so treat any number you see as a snapshot rather than a fixed figure. We do not publish claimed prices in the text for exactly that reason - see how we pick for how that works.
One habit worth adopting: check the same game on more than one store before buying. Console storefronts, Steam, and Amazon run sales on different schedules, and the gap between them on an older co-op game can be substantial. It takes a minute and it is the easiest saving on this page.
