Comparison
Seamless Co-op (Nightreign)vsFun is Allowed - Mod Overhaul for Solos and Duos
Comparison between the mod that extends party size (Seamless Co-op) and the rebalance for solo/duo (Fun is Allowed). Different audiences.
Verdict
Seamless Co-op if your group has more than 3 friends; Fun is Allowed if you play solo or duo and need a balance fix to make Nightreign viable.
Side-by-side
| Seamless Co-op (Nightreign) | Fun is Allowed - Mod Overhaul for Solos and Duos | |
|---|---|---|
| Free | Yes | Yes |
| Open source | Yes | No |
| Official | No | No |
| Type | Software | Software |
| Platforms | Windows | Windows |
| Difficulty | Intermediate | Intermediate |
| License | — | — |
| Source | — | — |
| Verified | June 2, 2026 | June 2, 2026 |
Which to use for what
- Group of 4-6 friends playing togetherBetter pick: Seamless Co-op (Nightreign)
Seamless Co-op extends party limit beyond vanilla 3. Fun is Allowed doesn't apply — it targets solos/duos, not large groups.
- Solo player struggling with NightlordsBetter pick: Fun is Allowed - Mod Overhaul for Solos and Duos
Fun is Allowed rebalances stats for solo viability. Seamless Co-op assumes you'll have a party.
- Balanced duo without a third playerBetter pick: Fun is Allowed - Mod Overhaul for Solos and Duos
Fun is Allowed specifically targets duo balance. Seamless Co-op enables duos but doesn't adjust difficulty.
- Online multiplayer with randomsBetter pick: Seamless Co-op (Nightreign)
Seamless enables closed groups via password. Fun is Allowed changes stats — incompatible with vanilla online.
- Combine both for custom setupBetter pick: Fun is Allowed - Mod Overhaul for Solos and Duos
Fun is Allowed is Seamless Co-op-compatible — you can use both. The difference is that Fun is Allowed is only needed if you want extra balance fixes.
These two mods tackle opposite Nightreign multiplayer problems. Seamless Co-op extends the party limit past 3, ideal for larger groups. Fun is Allowed rebalances for solo/duo viability — ideal when you don't have a 3-player party.
Different problems
Seamless: "My group has 5 friends but vanilla caps at 3 — I want to play together."
Fun is Allowed: "I play solo or duo and Nightlords are brutal — I want balance that respects but doesn't frustrate."
Disjoint audiences. If you always play in a trio, neither applies.
Compatibility
Both are offline-only (anti-cheat). Both can be combined — Fun is Allowed works on top of Seamless Co-op for custom group sizes (4-5) with adjusted balance.
When each wins
| Scenario | Best option |
|---|---|
| Party of 4-6 friends | Seamless Co-op |
| Viable solo runs | Fun is Allowed |
| Balanced duo | Fun is Allowed |
| Closed groups via password | Seamless Co-op |
| Custom 4-5 group with balance | Both combined |
Verdict
They're not alternatives — they're complementary or exclusive based on your setup. Decide based on your usual group size. If you play solo: Fun is Allowed. If you play in large groups: Seamless. If you play duo: Fun is Allowed (better balance) or Seamless (more casual).
Mod that extends party size beyond 3 and enables duos without vanilla matchmaking restrictions
View Seamless Co-op (Nightreign)Game rebalance for solo and duo: adjusted stats, starting Wending Grace, improved damage to make Expedition viable without a trio
View Fun is Allowed - Mod Overhaul for Solos and Duos