S4 Tile Upgrades

Season 4 — Dinosaur Origin

Plan your Biotech Lab, Bio Greenhouse and combat building progression. Strategic priorities baked in — fill cost cells as you see them in-game.

Recommended priority order

  1. 1 Biotech Lab — push until you can kill Level 60 dinosaurs (Virus Resistance gates the best Glory)
  2. 2 Bio Greenhouses — level all of them evenly and early (Fern Leaf income compounds)
  3. 3 Armory — start levelling once the Lab and Greenhouses are set (biggest combat impact)
  4. 4 Fortification — pair-level with the Armory if you anchor a hive
  5. 5 Command Center — steady passive damage boost
  6. 6 Biotech Lab → max it out for the last Virus Resistance gains
  7. 7 Mop up remaining combat building levels as resources allow

Biotech Lab

×1 Max L30 Priority #1

The only source of Virus Resistance — it sets the highest level of dinosaur you can attack, and Level 60 is the first big target.

Primary Stat
Virus Resistance
Strategy: Priority #1 all season, exactly as the Bio Lab was in Season 3. Push it until you can kill Level 60 dinosaurs before switching focus to combat buildings.

Per-Level Data (editable)

0 / 90 cells filled

Row L{n} = the upgrade to L{n} (cost shown in-game on the L{n-1}→L{n} screen); the Virus Resist value is the total at L{n}. Cells marked ✓ are confirmed from in-game; the rest are yours to fill in.

Level Cretaceous Scales Fern Leaves Virus Resist
L1
L2
L3
L4
L5
L6
L7
L8
L9
L10
L11
L12
L13
L14
L15
L16
L17
L18
L19
L20
L21
L22
L23
L24
L25
L26
L27
L28
L29
L30

Bio Greenhouse

×4 (5th unlocks via Wartime Investment) Max L30 Priority #2

Passively produces Fern Leaves — your main upgrade resource. Higher level = higher hourly output across all greenhouses.

Primary Stat
Fern Leaf output / hour
Strategy: Level all greenhouses evenly and early — income compounds for the rest of the season.

Per-Level Data (editable)

0 / 90 cells filled

Row L{n} = the upgrade to L{n} (cost shown in-game on the L{n-1}→L{n} screen); the Fern/h value is the total at L{n}. Cells marked ✓ are confirmed from in-game; the rest are yours to fill in.

Level Cretaceous Scales Fern Leaves Fern/h
L1
L2
L3
L4
L5
L6
L7
L8
L9
L10
L11
L12
L13
L14
L15
L16
L17
L18
L19
L20
L21
L22
L23
L24
L25
L26
L27
L28
L29
L30

Armory

×2 (3rd unlocks at Combat Specialisation L60+) Max L50 Priority #3

Boosts Season Troop ATK (Attack). Pure offensive power for seasonal combat.

Primary Stat
Season Troop ATK
Per Level
+3% per level (expected)
Strategy: Combat building — invest once the Biotech Lab and Greenhouses are where you need them. Highest direct impact on rallies.

Per-Level Data (editable)

0 / 150 cells filled

Row L{n} = the upgrade to L{n} (cost shown in-game on the L{n-1}→L{n} screen); the Season ATK value is the total at L{n}. Cells marked ✓ are confirmed from in-game; the rest are yours to fill in.

Level Cretaceous Scales Fern Leaves Season ATK
L1
L2
L3
L4
L5
L6
L7
L8
L9
L10
L11
L12
L13
L14
L15
L16
L17
L18
L19
L20
L21
L22
L23
L24
L25
L26
L27
L28
L29
L30
L31
L32
L33
L34
L35
L36
L37
L38
L39
L40
L41
L42
L43
L44
L45
L46
L47
L48
L49
L50

Fortification

×2 Max L50 Priority #4

Boosts Season Troop DEF (Defence). Critical for defending against rallies on your HQ.

Primary Stat
Season Troop DEF
Per Level
+3% per level (expected)
Strategy: Defensive backbone — essential if you anchor a hive or sit near contested zones. Pair-level with the Armory.

Per-Level Data (editable)

0 / 150 cells filled

Row L{n} = the upgrade to L{n} (cost shown in-game on the L{n-1}→L{n} screen); the Season DEF value is the total at L{n}. Cells marked ✓ are confirmed from in-game; the rest are yours to fill in.

Level Cretaceous Scales Fern Leaves Season DEF
L1
L2
L3
L4
L5
L6
L7
L8
L9
L10
L11
L12
L13
L14
L15
L16
L17
L18
L19
L20
L21
L22
L23
L24
L25
L26
L27
L28
L29
L30
L31
L32
L33
L34
L35
L36
L37
L38
L39
L40
L41
L42
L43
L44
L45
L46
L47
L48
L49
L50

Command Center

×1 Max L30 Priority #5

Boosts Season Troop DMG (Damage). Steady multiplier across all seasonal combat actions.

Primary Stat
Season Troop DMG
Per Level
+1% per level (expected)
Strategy: A flat multiplier that scales everything. Level it last among the combat buildings.

Per-Level Data (editable)

0 / 90 cells filled

Row L{n} = the upgrade to L{n} (cost shown in-game on the L{n-1}→L{n} screen); the Season DMG value is the total at L{n}. Cells marked ✓ are confirmed from in-game; the rest are yours to fill in.

Level Cretaceous Scales Fern Leaves Season DMG
L1
L2
L3
L4
L5
L6
L7
L8
L9
L10
L11
L12
L13
L14
L15
L16
L17
L18
L19
L20
L21
L22
L23
L24
L25
L26
L27
L28
L29
L30

Help build the cost data

Last Z: Survival Shooter doesn't publish per-level building costs anywhere — they only exist in-game, and no one has published a Season 4 table yet. As you upgrade each building, your in-game UI shows the exact Cretaceous Scales and Fern Leaves required for the next level. Type those numbers into the cells above and your progress is saved automatically.

If you'd like to share your data so other players benefit, please send a screenshot or copy of your table — we'll merge confirmed numbers into a shared baseline.

Quick FAQ

Is Dinosaur Origin Season 3 or Season 4?

Both labels are in use. Most sources call it Season 4, after the frozen Everfrost Era as Season 3; some count it as Season 3 because an earlier desert season was cancelled. It is the same season either way.

Does my data sync across devices?

Only if you sign in — the sync bar above saves your tables to your Z Tools account. Otherwise they live in this browser only, and clearing site data removes them.

Are the max levels and percentages confirmed?

Not yet. Season 4 re-themes Season 3 almost one-for-one, so the caps (Biotech Lab, Greenhouses and Command Center L30; Armory and Fortification L50) and the per-level bonuses marked “expected” are carried over from Season 3. Trust your in-game values, and tell us if they differ.

See also: Season 4 wiki guide · S3 Tile Upgrades · Event Cycle tracker

What are S4 tiles?

Season 4 (Dinosaur Origin) re-themes the frozen season into the age of the dinosaurs. The seasonal buildings work the same way as before — only the names change — but the Armory and Fortification now come in pairs, and a third Armory unlocks at Combat Specialisation L60+. For the full season overview, see the Season 4 wiki guide.

Renamed from Season 3

  • Bio Lab → Biotech Lab
  • Smart Greenhouse → Bio Greenhouse
  • Icy Arsenal → Armory
  • Icy Fort → Fortification
  • Command Post → Command Center

The two seasonal resources

  • Cretaceous Scales (formerly Frost Cores) — drop from killing Velociraptors and rallying Stegosaurus. Only a capped number of kills per day reward Scales, and the Biotech Lab uses them in bulk, so they are the season's bottleneck.
  • Fern Leaves (formerly Ice Blooms) — generated passively by your Bio Greenhouses. Higher Greenhouse level = higher output per hour, which is why most players push Greenhouses early.

How the data tables work

The exact per-level costs aren't published anywhere public — they only exist in-game. Every cell is editable: fill it as you upgrade and it saves automatically. As confirmed values come in from in-game screenshots they'll be marked with a ✓. If you'd like to share your numbers, let us know.