A Gene Roll can replace a bonus you wanted. Lock the slot first, then roll a different slot.
Unlock it
Complete the tutorial. If Genetics is closed while a prompt still points at legs or another station, finish that prompt. The system uses gene slots and a lock. One documented result is +4% arm and leg size. That is an example of a physique bonus, not a guaranteed roll and not a ranked best gene. No full gene list is published, so read the effect on your own result.
Extra rolls are also sold for Robux. The price is not published. Spend the free rolls before you buy more.
Rolls you can try from codes
If these still redeem, the Gene Roll codes add up as follows:
| Code | Gene Rolls | Cash |
|---|---|---|
| SorryForRestart | 5 | none listed |
| GENESPART2 | 5 | 10k |
| SORRYFORBUGS | 5 | 10k |
| JUANMOREGENEROLL | 1 | none listed |
That is 16 Gene Rolls and 20k Cash from those four codes alone. SPECIALBARS and UpdateNextWeek do not give rolls. They give Cash plus 2x Gains for 10 minutes. The older GENETICS code, 10k Cash and 3 Gene Rolls, is on the expired list.
Redeem from Rewards with the exact spelling. SorryForRestart is not all caps.
Lock, then roll
- Open Genetics.
- Read the bonus on the slot you might lose. A size bonus is not the same thing as strength or stamina regeneration.
- Use the lock on the slot you want to keep.
- Wait until the slot shows Slot protected.
- Roll only the slot you are willing to replace.
- Read the new effect before you roll again. Stop when the remaining slots are ones you would rather not lose.
More rolls do not mean a better build. A bad replacement with no rolls left is the usual way to waste the codes.