Mechanics

Everything is Crab Genetic Splicing Guide: Starting DNA Choices

By Nocti · Last updated

Genetic Splicing unlocks after a Pressure 1 win. Regular Pressure runs can offer two random Genetics from two groups, or one freely chosen Genetic if you decline the splice; Challenge runs do not offer Splicing.

Practical use

  1. Beat Pressure 1 to unlock Genetic Splicing. It applies to regular Pressure runs once available; Challenge runs do not offer the splice flow.
  2. A splice presents three Genetics, lets you choose one, then presents a second group of three and lets you choose one more. A Genetic skipped in the first group can appear again in the second.
  3. You can decline Splicing and choose one Genetic from everything you have unlocked. This trades the two-Genetic combination for full control over a single start.
  4. Restarting or quitting before 30 seconds keeps the same Splicing offers for the next run. Dying, including within those first 30 seconds, refreshes the choices normally.
  5. The game therefore does not provide a free rapid reroll for a specific two-Genetic combination. Use a single chosen Genetic when build control matters more than splice power.
  6. To check what you chose after the run starts, press Tab or C to open the Character and stats screen, or use CHARACTER from the pause menu. The one or two selected Genetics appear below Darwin; hover them for their tooltips. This view remains available while an Evolution, Specialisation, or POI choice is open.
  7. Do not confuse starting Genetic Splicing with evolution branches or an in-run fusion offer; they are separate decisions.

Related pages

Beginner First Clear

Plan a Pressure 1 attempt around the cards you can use: reach food, escape dangerous attacks and develop one reliable attack. Compare alternatives before committing upgrades.

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Physical Predator

Direct-contact damage, meat routing, and Physical scaling for players who want bosses to end quickly instead of becoming endurance checks.

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Poison Trickster

Choose a way to apply poison, then build around the openings needed to use it. Compare Spit with Poisonous Saliva, Stinger, and the conditional Pedal Glands route without treating every card as mandatory.

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Why old first-boss advice can be misleading

Version 1.1 changed Splicing availability: after unlocking it, players can use it in Pressure runs without earning another offer by reaching a boss. Advice written around launch may describe the older cycle. If an old discussion tells you to fight the first boss before another splice becomes available, compare its date with the 1.1 announcement before planning an extra run.

The same announcement retains the ability to decline Splicing and says that quitting or restarting too soon preserves the offered choices. These are separate rules. Declining the current combination is a normal selection decision; rapidly restarting is not described as a reliable way to generate an entirely new set. The official patch note does not provide a precise timing threshold for that protection.

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Evaluate the combination you actually received

Read both starting effects before deciding how to spend early choices. A proposed combination is useful only if its benefits can operate together and its restrictions leave a workable opening. For example, a route that relies on selecting a particular new Evolution needs another plan when one of the chosen Genetics changes that selection process. This is a decision rule, not a claim that every random pair has an equally strong build.

During the run, Tab or C opens the Character screen; the pause menu also has CHARACTER. Odd Dreams Digital explains that the one or two selected Genetics appear below Darwin and can be hovered for their tooltips. This reminder is available on Evolution, Specialisation and Point of Interest choice screens, where it can prevent a forgotten starting rule from invalidating a planned pick.

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Released controls and discussed ideas

A combined start also creates a tracking question. The separate developer reply about Pressure and Challenge records explains where to see those records, but does not settle whether one spliced victory gives two entries credit. If that distinction matters to Complete or a Challenge checklist, inspect both entries after the result. Keep the combination in your notes without assuming the second completion.

FAQ

Should I reject every unfamiliar pair?

Read the changed rules first. An unfamiliar pair may support a useful route, but there is no need to accept it merely because two modifiers sound stronger than one. Declining is supported; compare the actual opening you can play.

Is an early restart proof that Splicing is broken?

No. The 1.1 note explicitly says that quitting or restarting too soon preserves choices. Seeing the same options under that condition is consistent with the documented behavior, not evidence that a fresh random selection was promised.

Can I select unrestricted combinations or a Sandbox now?

In the September discussion, Odd Dreams Digital describes Splicing as a way to encourage random combinations and discusses ways to make experimentation less frustrating. A discussion of unrestricted combinations or a future Sandbox is not an announcement that those controls are already available. Use the choices shown by the released game rather than instructions inferred from a possible future mode.

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Update history

: Separated the released Splicing availability change from older first-boss advice and future proposals. Added in-run Genetic reminders and clarified the unresolved combined-Genetic completion question.