In the Roblox incremental simulator +1 Assassin Leveling (developed by +1 on top), the friend boost provides an automatic +10% Strength bonus for every friend who joins your active server session. You do not need to purchase gamepasses, unlock specific daggers, or activate a manual boost to receive the stat increase.
How the Friend Boost Multiplier Works
The official game description specifies: "Play with friends for +10% Strength each!" Whenever someone from your Roblox friends list is present in the same server, your Strength gains increase proportionally.
Because standard servers in +1 Assassin Leveling hold a maximum of 12 players, your group size is naturally bounded by server capacity.
| Friends in Server | Bonus Strength | Total Multiplier Effect |
|---|---|---|
| 1 Friend | +10% | 1.10x Strength gain |
| 2 Friends | +20% | 1.20x Strength gain |
| 3 Friends | +30% | 1.30x Strength gain |
| 4 Friends | +40% | 1.40x Strength gain |
| 5 Friends | +50% | 1.50x Strength gain |
The game does not require friends to stand near your character or attack the same enemies. The bonus remains active as long as your friends remain connected to your server.
Stacking Friend Boosts with Other Strength Sources
Strength is the primary training stat in +1 Assassin Leveling. Basic clicks award +1 Strength, which feeds directly into your leveling curve, damage output, and dagger requirements. Stacking the friend multiplier alongside other verified power systems speeds up your overall progression:
- Clicks and Hits: Every swing delivers base Strength and levels your character. The friend boost scales these gains without consuming temporary timers.
- Pets: Hatched pets (such as the early 25-cost Frog, Zap, or free Quest eggs) provide baseline stat boosts to your clicks.
- Rebirths: Rebirthing permanently increases your future Strength income, giving the friend percentage bonus a higher base rate to multiply.
- Temporary Multipliers: Quests occasionally award timed double-rewards windows, such as a 2-minute or 20-minute 2x Strength boost. In recorded gameplay, stacking active multipliers allowed players to surge from 200 million Strength to 400 million Strength to clear high-tier combat entry requirements.
- Daggers: Higher Strength output lets you unlock and purchase newer daggers faster. In +1 Assassin Leveling, daggers are strictly ordered so that every newly unlocked weapon is stronger than the previous one.
Known Limits and Undocumented Rules
While the +10% rule is official, certain underlying mathematical details are not publicly documented by the developer:
- No Stated Cap: The game description lists no maximum cap on how many friend bonuses can stack simultaneously. In practice, the limit is governed by the 12-player server ceiling (up to 11 possible friends in one server, equating to +110% if all other slots are filled by friends).
- Exact Stacking Formula: Documentation does not state whether friend bonuses calculate additively with shop gamepasses (such as x2, x4, or x8 Strength passes) or apply after all equipment multipliers are combined.
- Stat Coverage: The bonus explicitly targets Strength. There is no documented friend boost for Wins, critical strike chance, or drop rates.
Frequently Asked Questions
Do I need to buy a gamepass to activate the friend boost?
No. The friend boost is entirely free and built into the base game. It activates automatically whenever a player on your Roblox friends list joins your server.
Does the friend boost increase the Wins I earn from bosses?
No. The friend boost explicitly raises Strength. Wins are awarded directly by clearing stage bosses (which drop an observed 10 Wins on defeat) or via specific double-win quest rewards.
What happens if my friend leaves the server?
The +10% bonus associated with that player deactivates immediately when they disconnect. Your bonus recalculates based on the remaining friends currently inside the instance.
