Last Z Second Laboratory Guide — Research License, HQ18, and When to Buy
Quick Answer
Prioritize the Research License and second Laboratory early. The second research queue makes this one of the best-value purchases in Last Z, letting you develop another research branch alongside your main path.
When to Buy the Second Laboratory
The second Laboratory unlocks at HQ18 and requires a Research License. We recommend buying it early when you reach the unlock, ahead of lower-impact purchases.
- Reach the HQ18 unlock point.
- Keep developing the main Laboratory for HQ progression and major research unlocks.
- Prioritize the Research License to open the second research queue.
- Use the second queue for useful side research while the main path stays focused.
Second Laboratory Mistakes to Avoid
- Upgrading the wrong lab: the main Laboratory still matters most because it is tied to HQ progression and major unlocks.
- Ignoring research priority: the second lab speeds research, but it does not make weak research choices efficient.
How to Use Both Research Queues
- Split the work: keep the main research route progressing while the second queue develops useful side branches.
- Keep badge priorities: an extra queue adds research capacity; it does not reduce the badge cost of a branch.
- Do not over-upgrade it: keep the second lab useful, but do not let it pull resources away from the main progression path.
What to Read Next
Use the Research Guide for the main research order, Tech Guide for broader research philosophy, Early Game Optimization for HQ18 planning, and Power Guide if your goal is visible power growth.