- Stop The Tsunami tier list: Obsidian is the top block; wood is the weakest defensive material.
- Event difficulty: Mega and Lava tsunamis hit hardest; Blood Moon is weaker than the Rainbow wave.
- Upgrade priority: Bulk pickup, bulk placement, and strength training give the best returns.
- Core loop: Collect blocks, reinforce the wall, train at the gym, then spend earnings on upgrades.
- Key tip: Surviving waves unlocks the gallery and multiplier bonuses for faster progression.
Stop The Tsunami Tier List Overview
Stop The Tsunami is a Roblox survival game built around one simple loop: a massive wave is coming, and your team must stack blocks into a wall before impact. Success depends on two things — which material you draw and how efficiently you can place it. This Stop The Tsunami tier list ranks every block material and tsunami event so you know exactly where to invest your time and Robux.
Blocks are ranked by durability against impact, and tsunami events are ranked by destructive power. Materials are drawn randomly between rounds, so knowing the matchups helps you plan wall height and thickness in advance.
Block Material Tier List
Every round asks you to draw or select a material. The gap between tiers is enormous — a wood wall can shatter on the front row while an obsidian wall barely takes damage.
| Tier | Block | Durability | Notes |
|---|---|---|---|
| S | Obsidian | ★★★★★ | Best block in the game; shrugs off Blood Moon waves with minor damage |
| A | Diamond | ★★★★ | Rare draw, excellent all-around defense |
| B | Sand | ★★★ | Fragile alone, but sand bricks stack fast in bulk |
| C | Stone | ★★★ | Serviceable mid-game filler for patching gaps |
| D | Wood | ★ | Front row shatters instantly against Mega Tsunamis |
S-Tier: Obsidian
- Top-tier defense
- Minimal damage from epic events
- Reinforce thin spots freely
B-Tier: Sand
- Fast bulk placement
- Can melt under Lava waves
- Best used thick, not tall
D-Tier: Wood
- Breaks instantly vs Mega Tsunami
- Only acceptable early filler
- Replace as soon as possible
You cannot guarantee a strong material every round. When you draw a weak material like wood, compensate with extra wall thickness — multiple rows absorb far more impact than a single tall stack.
Tsunami Event Tier List
The gallery tracks every wave type you have survived, and each one behaves differently. Ranking events by threat level tells you when to panic-build and when to relax.
| Rank | Tsunami | Threat Level | Best Counter |
|---|---|---|---|
| 1 | Lava Tsunami | Extreme | Thick walls; sand may melt, prioritize depth |
| 2 | Mega Tsunami | Very High | Multi-layer walls; weak materials fail here |
| 3 | Rainbow Tsunami | High | Tall, well-built stacked defenses |
| 4 | Blood Moon Tsunami | Medium | Obsidian walls barely take damage |
| 5 | Normal Tsunami | Low | Basic stacked wall is enough |
Each survived wave unlocks a gallery entry and contributes toward multiplier bonuses. Surviving five different tsunamis unlocks the 10x multiplier, so deliberately cycling through every event type accelerates your income.
Upgrade Priority Rankings
Between rounds, you earn money from both surviving waves and placing blocks. Spending it in the right order multiplies your building speed.
| Priority | Upgrade | Cost Range | Value |
|---|---|---|---|
| 1 | Bulk Pickup | Cheap-mid | ★★★★★ Removes the slow one-by-one grind |
| 2 | Bulk Placement | Cheap-mid | ★★★★★ Lay entire wall rows instantly |
| 3 | Strength Training (Gym) | Free-time cost | ★★★★ Carry more blocks per trip |
| 4 | Treadmill Speed | Free-time cost | ★★★★ Faster runs between pool and wall |
| 5 | Placement Range | Mid | ★★★ Skippable if you bulk place |
Paid boosts like 5x speed (20 Robux) and 10x strength (80 Robux) exist but are optional. The diamond treadmill and gym offer similar benefits for free if you train between waves — skip the pay-to-win route unless you are impatient.
Round-by-Round Survival Strategy
Follow this routine every round to maximize both survival odds and income.
Check the Draw
See which tsunami and material you rolled. Weak material means build thick; strong material means build tall and reinforce the front.
Grab Blocks Early
Head to the block pool immediately. Without bulk pickup, you can only carry a handful of blocks per trip, so start hauling before the timer gets tight.
Patch Weak Spots
Inspect the team wall. Stacks placed straight up with no bracing are the first to fail — add supporting rows on the vulnerable side rather than stacking on top.
Train With Spare Time
If more than 90 seconds remain and the wall looks solid, hit the gym and treadmill. Muscle points increase carry capacity and run speed for the rest of the match.
Reinvest Earnings
After each survived wave, spend cash at the upgrade booth. Rarer blocks placed also earn more money, so keep placing even when the wall looks finished.
Stand near the center of the wall at impact, never the edges. Waves that fail to break through often flow around the sides, sweeping away anyone standing on the flanks.
Progression Checklist
Survival Milestones:
- Survive a Normal Tsunami with a stacked wall
- Unlock the Rainbow Tsunami gallery entry
- Purchase Bulk Pickup and Bulk Placement upgrades
- Reach 1,200+ muscle points at the gym
- Survive a Mega Tsunami and a Blood Moon Tsunami
- Unlock the 10x multiplier by surviving five wave types
Once every gallery entry is unlocked, shift your focus from survival to income optimization: place rare blocks constantly and max out upgrades to top the leaderboard.
FAQ
Q: What is the best block in the Stop The Tsunami tier list?
Obsidian is the strongest material in the game. An obsidian wall took only minor damage even from an epic-level Blood Moon Tsunami, making it the clear S-tier pick whenever you can draw it.
Q: Can you stop a Mega Tsunami with wood?
It is possible but risky. Wood blocks in the front row shatter instantly on impact, so a wood-only defense needs many backup layers. Trading for a better material or building extra thickness is far more reliable.
Q: Are paid upgrades worth the Robux?
The 5x speed boost (20 Robux) and 10x strength (80 Robux) are convenience purchases, not requirements. Free gym training and the diamond treadmill provide comparable carry capacity and speed if you invest the time.
Q: How do you earn money fastest in Stop The Tsunami?
Placing blocks generates income, not just surviving waves — and rarer blocks pay more. Keep laying material even after the wall is finished, then reinvest everything into bulk pickup and bulk placement upgrades.