Looking for “free gems”? In Kaiju No. 8 The Game they’re called Dimensional Crystals, and you can stock up without paying if you play the game’s checklists the right way. This guide keeps it clean and practical—no fluff, no spoilers.
Clear story chapters (including Memories and Character Stories), finish your Daily/Weekly missions, grab Achievements, climb Player Rank, and collect everything in Mail. Watch the Events tab—limited campaigns like Friend Invitation can drop large, one‑off bundles.
How to get free Gemns
- Finish the tutorial, then sprint the Main Story. First‑clear rewards are generous early on. Each chapter/episode pays out crystals the first time you complete it.
- Open Memories & Character Stories. These side chapters are easy wins—short stages with crystal rewards that don’t require high power.
- Knock out Dailies in one login. Hit the checklist (stages, upgrades, resource runs) and claim the bundle; repeat on Weeklies every reset.
- Claim Achievements as you play. Many unlock just by progressing (enhance a unit, clear X stages, add friends). Visit the tab and mass‑claim.
- Level your Player Rank. Account rank‑ups grant crystals at milestones; they come naturally while you clear content.
- Check Mail every session. Maintenance gifts, launch campaigns, and milestone “thank you” bundles often land here—easy to miss if you don’t open it.
- Track time‑limited Events. Banners rotate, but things like Friend Invitation can award up to ~1,500 crystals for accepted invites (invitees usually get a small grant too). Read the in‑game News for dates, caps, and rules.
Best early‑game route (15–30 minutes)
- Clear the next two Main Story episodes.
- Run Memories or Character Stories until you hit the next power gate.
- Do the full Daily cycle and claim it.
- Open Achievements and Mail, claim all.
This loop usually nets enough for a pull or two without touching your wallet.
Do “codes” exist for crystals?
Right now, there are no official redeem/serial codes for Dimensional Crystals. If the devs release any, they’ll appear in the in‑game News or official socials. Avoid third‑party “free code” sites—they’re how accounts get compromised.
Make your crystals matter
- Save for goal banners. Pull where units fit your team roles; avoid scattered, low‑value singles.
- Mind pity windows. If a banner lists guarantees, calculate whether you can actually reach them before it ends.
- Spend around unlocks. Pull when you open new team slots or key passives so upgrades land at a good power spike.
If a limited event is paying unusually well, tell us which one and the exact requirements—I’ll test it and fold the results into this guide to keep it current.





