Roblox simulator pacing calculator

Put in your upgrade and rebirth numbers and see how long each level and each rebirth takes, assuming a player spends everything on one upgrade. If each rebirth takes much longer than the last, the late game stalls. Everything runs in your browser.

Income Base income / s

Upgrade Base cost Cost growth Income per level Levels

Rebirth Base requirement Requirement growth Multiplier per rebirth Rebirths

Offline Max hours Efficiency (0-1)

Rebirth pacing

Upgrade pacing

How the numbers work

Price of the next level is floor(baseCost × growth^owned). Rebirth k needs baseRequirement × requirementGrowth^k and multiplies income by 1 + k × multiplierPerRebirth. With an additive multiplier, each rebirth takes about growth × (1 + k·p) / (1 + (k+1)·p) times as long as the previous one, so it creeps towards requirementGrowth. A ratio around 1.2–1.5 keeps progress steady; 2+ means players hit a wall. Derivations: formulas.md.

Same maths as the command-line version (lune run scripts/balance.luau config.json), which is also a Claude skill for designing simulator economies: roblox-luau-skill on GitHub.

Selling eggs or crates? The egg odds calculator & disclosure checker turns loot-table weights into the percentages Roblox requires you to show, with rounding, the disclaimer, pity and luck boosts.