Bulbasaur evolves at run levels 24 and 41; Charmander and Squirtle evolve at run levels 24 and 44 in the checked PokéBonk Beta 0.6.3 data. Use the three-starter table for the exact forms, then follow the Bulbasaur walkthrough below for the level-up trigger and troubleshooting steps.
Starter evolution levels
| Starting Pokémon | Middle form and run level | Final form and run level |
|---|---|---|
| Bulbasaur | Ivysaur — Lv.24 | Venusaur — Lv.41 |
| Charmander | Charmeleon — Lv.24 | Charizard — Lv.44 |
| Squirtle | Wartortle — Lv.24 | Blastoise — Lv.44 |
These are levels within one run, from the original 0.6.3 source records reviewed on 18 October 2026. The second transition uses the displayed run level; it does not require another 41 or 44 levels after the first evolution. This table covers the three starter families, each with its own final threshold.
Bulbasaur evolution levels
Bulbasaur evolves into Ivysaur at run level 24, then into Venusaur at run level 41 in PokéBonk Beta 0.6.3. These are this game’s thresholds, rather than the evolution levels used in the main Pokémon games. The game checks evolution as your run level increases; Bulbasaur’s route does not ask you to buy an evolution stone or find a separate evolution button.
| Form | Available from run level | Next transition |
|---|---|---|
| Bulbasaur | 1 | Ivysaur at level 24 |
| Ivysaur | 24 | Venusaur at level 41 |
| Venusaur | 41 | Final stage of this line |
Treat the two numbers as levels within one run. Reaching Ivysaur does not reset the counter and require another 41 levels: the second target is the displayed run level 41.
At level 23, the next level is the first threshold. Between levels 24 and 40, Ivysaur is the expected stage. At level 41, the second threshold is reached and Venusaur is the final stage of this line. Continuing past that point can improve the run without creating another Bulbasaur evolution.
The game’s evolution animation and form change are separate from choosing a new move card. You do not need to keep an empty move slot to allow Bulbasaur’s form to evolve. An empty slot matters when you want to learn a new move from the eligible pool, which is explained in the move guide.
Find the rule in the original game
Before starting a run, open PokéBonk, choose Play → The League → Bulbasaur, and inspect the evolution information. This is the useful place to compare the guide with a later game version.
For a League member outside the three starter families above, select that member’s card and read its own evolution line. Do not carry Bulbasaur’s 24/41 thresholds across every species: Charmander and Squirtle already show the different 24/44 schedule. A Pokémon that has no further evolution can instead have its own strengthening rules. Likewise, the Pokédex describes a different collection from the playable League and is not a list of identical evolution routes.
If you are trying to select a locked member rather than evolve your current character, go to the unlock guide. A League challenge and an in-run evolution solve different problems.
A practical route through the thresholds
Use a run with Bulbasaur selected as the starting member, then watch the run level, rather than elapsed time or KO count. Experience gain and the time needed to reach a level depend on what happens in that run.
- Start with Vine Whip and gather experience while keeping room to move. Your first goal is a sustainable run, rather than waiting in danger for a particular move.
- Build the available native kit as it is offered. Razor Leaf becomes eligible at level 2, Sleep Powder at level 4 and Solar Beam at level 7; eligibility does not force the next card to be that move.
- Check the current form when the run reaches level 24. The level-up flow handles the evolution trigger.
- Continue gaining experience with Ivysaur until the displayed level reaches 41. The second transition is to Venusaur.
- If a new move is also your goal, inspect free slots separately. Evolving and adding a move are different checks.
For more detail on choosing between damage, control and a reserved slot, use the Bulbasaur build route. It is a planning guide grounded in the kit, rather than a claim that one item sequence always appears.
Why evolution may seem to be missing
Check the actual level first. Forty minutes, 24 KOs or a challenge counter are not the same as run level 24. The threshold is attached to your character’s level in the active run.
Check the starting family and current stage. A different Pokémon may have different conditions. Venusaur has already completed this line; waiting for another Bulbasaur stage will not reveal a fourth form.
Separate a form change from an unavailable move. If your character evolved but a desired move did not appear, inspect its source and level in the move list. The offer can be random, and a full move bar prevents a new move from being offered. Buying the fourth move slot changes capacity; it does not alter the evolution thresholds.
Check whether the game itself is running normally. If the screen or animation has stopped responding, record the level, character, mode and version before reloading. Follow the graphics and run-result checks instead of deleting your browser data. A frozen renderer is a different symptom from a rule that has not been met.
Sources and scope
The three-starter table uses the original Beta 0.6.3 Pokémon records and runtime evolution rules, reviewed on 18 October 2026. Bulbasaur’s 24/41 thresholds were also recorded in League → Bulbasaur. See the original game. This page covers the three checked starter families with a deeper Bulbasaur walkthrough; it does not claim a recorded end-to-end playthrough or a complete table for every League member.