Z Tools
Interactive tools to help you dominate Last Z: Survival Shooter
This is the toolkit we use ourselves on Server 277 — built by an active player to fix the gaps left by the in-game UI and the various wiki sites. Everything below works in your browser, saves progress locally, requires no account, and is free to use. There's no “premium” tier.
The tools, grouped by what they do
Event & timing
Alliance Duel Calendar covers the 7-day VS event cycle with timezone-aware countdowns, the daily bonus schedule (Monday Vehicle, Friday Holistic Growth, etc.), and the optimal Radar / Lab / Construction windows for maximising daily points. Most useful Sunday evening when you're planning the week.
Long-term progression
Research Trees tracks where you are in all 9 trees (94 nodes, 4.2M badges total) with prerequisite-aware navigation and a best value sorter for big windfalls. Tank Modifications tracks the 49 mods / 70.7K wrench tree that powers your vehicle — including the Cheetah → Hercules → Destroyer → Destroyer-EX milestones. HQ Levels is a static reference for what each HQ tier 1–35 costs and unlocks.
Reference data
Heroes covers all 26 heroes (Blood Rose, Guard of Order, Wings of Dawn) with full per-level skill effects, searchable by ability keyword. Buildings covers all 38 buildings with their unlock requirements and 30-level upgrade tables. Both are scraped from the live game data, not screenshots, so the numbers are exact.
Spend planning
Lucky Discounter calculates exactly which draw attempt you're on, refreshes done, and tickets remaining to the next guaranteed 90% Off (checkpoints at 5, 9, 18, 32). Tells you whether your next pull is worth doing or if you should bank your diamonds and wait. Event Cycle sits one level above that — it shows which of the four rotating diamond-spend events (Gacha Go, Bullseye, Lucky Discounter, Lucky Chest) is live now and what's coming up, with a live countdown so you can time your spending.
Seasonal
S3 Tile Upgrades covers the Season 3 (Everfrost Era) building set — Biolab, the Smart Greenhouses, and the three combat buildings (Icy Arsenal, Icy Fort, Command Post). Comes with the recommended priority order, max-level reference and an editable cost tracker (with confirmed in-game values) that fills in as you upgrade and saves to your browser.
Alliance Duel Calendar
Track the 7-day event cycle with daily bonus windows, timezone conversion, countdown timers, and optimal strategy times for every event day.
Research Trees
Complete badge costs and node dependencies for all 9 research trees totalling 4,219,144 badges. Search, expand, and plan your research path.
Tank Modifications
Track your Elite tank modification wrench progress. Sub-level planner with auto-complete hierarchy totalling 70,700 wrenches across Weapon, Tire, Trunk, Special and Vehicle mods.
Heroes
Full skill details for all 26 heroes across Blood Rose, Guard of Order and Wings of Dawn factions.
Buildings
Full reference for all 38 buildings — unlock requirements, per-level resource costs, power, and special stats.
HQ Levels
Reference table of HQ upgrade requirements: buildings, resource costs and heroes level cap for HQ 1–35.
Event Cycle
Live tracker for the diamond-spend rotation — Gacha Go, Bullseye, Lucky Discounter and Lucky Chest. Shows what's active now, what's next, and a live countdown to the next swap.
S3 Tile Upgrades
Season 3 Everfrost Era planner for Biolab, Smart Greenhouses and the three combat buildings (Icy Arsenal, Icy Fort, Command Post). Strategic priorities, max levels and a cost tracker with confirmed in-game data.
Lucky Discounter
Event guide, probability breakdown, draw tracker, and simulator for the Lucky Discounter event.