Ideas for two-player co-op runs, weighted towards shorter sessions. Split into three types: seed-based runs (world modifiers), rule-based runs (self-imposed constraints on a normal world), and hybrid runs (seeds + rules combined). All seeds are case and space insensitive; stack them with pipe separators, e.g. too easy|fish mox.
See also: Terraria
Seed-based runs
⭐ Hallowed from the Start
Seeds: too easy|does that sparkle
Time: 4–10 hours | Difficulty: Expert recommended
Your suggestion — and a great one. too easy starts the world already in Hardmode, meaning the Hallow has already spread across part of the surface. Combine with does that sparkle which adds Hallow-style sparkling effects to the world generation. You spawn into a world that looks and feels like late-game but you have starter gear. The immediate goal becomes survival: scavenge Hardmode ores, avoid Hardmode enemies, and try to find your footing. It dramatically compresses the usual slow pre-Hardmode crawl, and co-op makes the early scramble genuinely fun rather than just overwhelming.
💡 Divide and conquer immediately — one player hunts the surface for early Hardmode ores, one digs for the Underground Hallow. Regroup and share.
Journey Mode — Naked Start
Time: 5–15 hours | Difficulty: Set slider to Expert (2×) or Master (3×)
Create Journey Mode characters and a Journey world. The moment you spawn, both players drop every starting item on the ground — the fledgling wings, the tools, everything — and leave them. You play from absolute scratch in a mode that technically has cheats available but you use none of them. The journey difficulty slider is set to Expert (2×) before the first night. The twist: if you’re ever truly stuck and would otherwise stop playing, you’re allowed to use one Journey power per session (time skip, weather toggle, etc.) as a “lifeline” — but you must agree on it together first.
💡 The fledgling wings sitting on the ground at spawn are a constant temptation. Agreeing not to touch them is the whole bit.
Mediumcore Co-op
Time: 8–20 hours | Difficulty: Expert world
Create Mediumcore characters (items drop on death, retrievable). Play on Expert. In multiplayer, items dropped by a dead player can be collected by the other player — which means your partner can run in and grab your gear before enemies take it. This creates a genuinely tense dynamic where death is recoverable but only with your partner’s help. It adds stakes without the permanence of Hardcore.
💡 Designate who is the “rescue runner” when either of you dies. The other player charges in to collect the dropped items while the dead player runs back.
The Blacksmith Run
Time: 10–20 hours | Difficulty: Expert
You may only use weapons and armour that you have crafted yourself — no chest loot weapons, no dropped weapons, no purchased weapons. Accessories found in chests are allowed. This forces both players to be very attentive to ore gathering and crafting progression, and makes each boss fight feel genuinely earned because your gear was all handmade. Works especially well on Drunk World where doubled ores mean you progress through crafting tiers more quickly.
💡 Coordinate your craft paths — there’s no point in both players making the same thing. One focuses on ore smelting, one focuses on ingredient gathering.
The Nuzlocke
Time: Variable | Difficulty: Expert
If either player dies, both quit the world and roll a new one. No exceptions. This is most fun on a medium-length seed (Drunk World or The Constant recommended) where a restart isn’t devastating. Alternatively, a softer version: each death costs the dead player their best currently equipped weapon, which must be thrown away before respawning.
💡 The soft version (lose your best weapon) is more fun than a full restart because the game continues to get harder as both players lose gear over time.
Boss-Per-Session Sprint
Time: 1–3 hours per session | Difficulty: Any
Structure the playthrough so that each co-op session has exactly one goal: defeat the next boss in the progression order. No wandering, no base building beyond what’s needed, no extended mining — just gear up and fight. This turns an open-ended game into a series of satisfying discrete sessions that each feel complete. Works brilliantly for players who can’t commit to long sessions but want to feel like they’re making progress.
Progression order: King Slime → Eye of Cthulhu → Eater of Worlds/Brain of Cthulhu → Queen Bee → Skeletron → Wall of Flesh → Queen Slime → The Twins → The Destroyer → Skeletron Prime → Plantera → Golem → Duke Fishron → Empress of Light → Lunatic Cultist → Moon Lord.
Permanent Night Run
Time: 8–20 hours | Difficulty: Expert
Use Journey Mode with the time locked to midnight (set time to 0 in the Journey power menu and disable time progression). The world is always night. Blood Moon events, night enemies, and the general oppressive darkness are permanent. Use night of the living dead seed to start with a Blood Moon already active for maximum chaos on the first night.
💡 Torches and lighting become genuinely important. One player should specialise in keeping the base and routes well-lit.
Hybrid runs — seeds + rules combined
✨ Hallowed Chaos
Seeds: too easy|does that sparkle
Rules: Split class run — one player Melee, one player Magic
Time: 6–12 hours | Difficulty: Expert
Start in Hardmode with the Hallow already spread, each player locked to a specific class. The Melee player tanks the Hardmode surface enemies while the Magic player provides burst damage. No pre-Hardmode gear ramp — you’re improvising from scratch with the class limitation in place from minute one.
The Peaceful Forest
Seeds: fish mox|winter is coming
Rules: No fighting any enemy unless they attack you first. You may always defend yourself. You may fight bosses.
Time: 6–15 hours | Difficulty: Classic
A snow-covered world with no evil biomes and a pacifist rule for non-boss enemies. A slow, atmospheric, almost cosy playthrough. You collect resources, build a base, and fight the bosses as events rather than as routine combat. Surprisingly satisfying.
The Naked Journey Speedrun
Seeds: celebrationmk10
Rules: Journey Mode, drop all starting items at spawn, no Journey powers except the difficulty slider (set to Expert). Both players race to kill Moon Lord as fast as possible. Track your time.
Time: 3–8 hours | Difficulty: Expert
Celebration Mk10 boosts rare drops and gives best-in-class chest modifiers, so the “naked” start is more forgiving than it sounds. The goal is to beat your previous personal best together. Good for players who know the game well and want structure without a punishing difficulty jump.