The five fixes that actually work
Use a cable. Wifi is the most common source of jitter in a home, and an ethernet cable to the router removes it entirely. It is unglamorous, it is cheap, and it beats every other change on this list combined. If a cable is genuinely impossible, moving closer to the router or switching to the 5GHz band is the next best thing.
Get the voice call off the same device. A Discord call, the game, and a stream all competing for one connection is a self-inflicted problem. Running voice chat from a phone on mobile data while the game uses the wifi separates the two completely. Our Discord guide covers the setup.
Stop the background downloads. A console updating a game in the background, a cloud backup, or somebody else in the house streaming will saturate a modest connection. Most consoles let you pause downloads while you play, and it is worth making that a habit before a session rather than a diagnosis during one.
Pick a server region deliberately.Where a game offers the choice, everyone should be on the region closest to the group's worstconnection, not the average one. Groups usually default to the host's region, which is often exactly the wrong answer.
Let the strongest machine host. Covered above, and worth repeating because it is free and most groups never think of it.
The picks in detail
Among Us is the most connection-tolerant multiplayer game we recommend. Free on phones, full crossplay, four to fifteen players, and the entire experience is conversation. Review here.
The Jackbox Party Packasks even less of the network on most people's side, because only the host runs the game and everyone else is sending occasional taps from a phone. It also works over a screen share, which means the group's bandwidth burden sits on one person. Review.
Stardew Valley and Terraria are the calm co-op picks - both cheap, both forgiving, and neither has a single moment that depends on reaction time. Stardew is same-platform only, so line that up first. Minecraft is the flexible one and crossplays across everything, though remember the host does the heavy lifting.
Diablo IV is the pick when the group wants something substantial. It is co-op against the computer, so latency costs you feel rather than fights, and it has full crossplay and cross-progression. Review. Human: Fall Flat is the cheap party option where wobbliness is the joke anyway, and Genshin Impact is free, drop-in, and runs on a phone.
When the connection is truly unusable
There is a point below which no game choice helps, and it is worth knowing what still works there. Games where everyone is in the same room need no connection at all - our no-internet guide is built for exactly that. Phone games over a normal voice call are the next tier up, covered on phone games for friends far away.
And if the underlying problem is that the group can never all be online at the same time rather than the line itself, that is a different guide: games for friends in different time zones and drop-in drop-out games both handle it properly.