Roll to Defend Rarity Tier List — All Rarities Ranked by Value

The rarity system in Roll to Defend determines how likely you are to pull each unit from the gacha wheel, and understanding which rarities provide the most value per roll is essential for efficient resource management. This rarity tier list ranks every rarity tier based on its practical value, merge efficiency, roll difficulty, and overall impact on your progression.

Not every rare unit is worth the effort it takes to pull it, and some common rarities provide more practical value than their roll odds suggest. The key insight is that value depends not just on raw stats but on how efficiently you can obtain and merge units at each rarity level. A 1/100K unit you can reliably merge to Merge 3 may outperform a 1/1M unit that sits at Merge 0.

Complete Rarity Tier Overview

Roll to Defend features six distinct rarity tiers, each with dramatically different pull odds and power levels. The gap between the common 1/10K tier and the legendary 1/1B+ tier is enormous, which makes understanding each tier's practical value crucial for efficient gameplay.

The paradox of rarity value is that higher-rarity units are individually more powerful but harder to merge because duplicates are rare. This means the most practical rarity for mid-game progression is actually the Rare tier (1/100K), which provides strong enough base stats to carry through Wave 50 while being common enough to merge efficiently.

Rarity Value Analysis — Which Tiers Are Worth Chasing

Common (1/10K) — Low Value, High Volume

Common units are the most frequently pulled but provide the least value per unit. They serve as early-game starter units and merge fodder. The only practical use for common units beyond Wave 10 is as temporary deployment fillers or Merge 1 material for units you plan to replace soon.

Value assessment: Low — common units should be replaced as quickly as possible with higher-rarity pulls. Investing coins in upgrading or deeply merging common units is generally inefficient.

Uncommon (1/50K) — Moderate Value

Uncommon units bridge the gap between common starter units and the mid-game rare tier. They provide decent DPS for waves 5-20 but are outclassed by rare units in later brackets. Uncommon units are worth merging once if you need mid-game power, but should not be your primary long-term investment.

Value assessment: Medium — useful in the early-to-mid transition but eventually replaced by rare units.

Rare (1/100K) — High Value, Best ROI

The Rare tier at 1/100K is the sweet spot of Roll to Defend's rarity system. These units provide strong enough base stats to serve as mid-game carries, and their moderate pull rate means you can accumulate duplicates for merging. A rare unit at Merge 2-3 is one of the most efficient investments in the game.

Value assessment: Very High — rare units provide the best return on investment because they combine strong base stats with achievable merge levels. For most players, the Rare tier is the core of their defense.

High Rare (1/1M) — Premium Value

High Rare units at 1/1M are powerful carries that form the backbone of late-game defenses. Their high base stats make them effective even without merging, and a single Merge 1 gives them S-tier-adjacent performance. The challenge is obtaining them — at 1/1M odds, you need significant luck stacking to pull one.

Value assessment: Very High — but only obtainable with dedicated luck stacking. The investment in luck sources (group, friends, gamepasses, rebirth) pays off when you finally pull a 1/1M unit. See our Luck Boost Guide for luck strategies.

Ultra Rare (1/10M) and Legendary (1/1B+) — Trophy Value

Ultra Rare and Legendary units are extraordinarily powerful but nearly impossible to merge because duplicate pulls are vanishingly rare. Their value lies in their raw stats — even at Merge 0, they outperform most merged units at lower rarities.

Value assessment: Extremely high per unit, but the inability to merge them means their long-term scaling is limited compared to units you can actually merge. For most players, these tiers represent aspirational goals rather than practical investments.

Rarity ROI Comparison

This table compares the practical return on investment for each rarity tier, considering both base power and merge potential:

For the complete merge analysis, see our Merge vs Roll Analysis.

Advanced Tier List Analysis and Unit Strategy

Beyond the basic tier rankings, experienced players understand how unit value changes based on game stage, available resources, and synergistic combinations. This section covers the advanced analysis that helps you make optimal unit deployment decisions.

Tier Value Shifts Based on Merge Level

The tier list changes dramatically when merge levels are considered. A merged mid-tier unit can outperform an un-upgraded high-tier unit, making merge potential a critical factor in unit evaluation:

B tier units at Merge 2 reach A- rating, making them viable late-game units. This is why experienced players often prefer a merged B tier carry over chasing A tier pulls — the guaranteed power is more reliable than the uncertain pull odds.

Role-Based Tier Adjustments

Tier rankings also shift based on the role a unit fills in your defense. A unit that is C tier for DPS might be B tier for support:

The best defense balances all four roles. A team of four S tier DPS units with no tank will fail at higher waves because zombies break through too quickly. Always include at least one tank and one support unit regardless of tier ranking.

Unit Synergy Combinations

Certain unit combinations create synergistic effects that make the whole team stronger than the sum of its parts:

The most powerful synergy is Support + Carry — a buffed carry unit with support bonuses can perform at a tier level 1-2 positions above its base rating. This is why merging and upgrading a carry unit while adding one support unit often outperforms rolling for a higher-tier carry.

When to Replace Units vs Merge Existing Ones

A common strategic dilemma: should you replace a lower-tier unit with a newly pulled higher-tier unit, or keep the lower-tier unit and merge it?

The decision hinges on the effective tier comparison after merge bonuses. Never replace a merged unit with an un-merged unit of similar effective tier — the merge bonuses make the existing unit stronger.

Frequently Asked Questions

Which rarity is the best value in Roll to Defend? The Rare tier at 1/100K provides the best value because it combines strong base stats with achievable merge levels. A merged rare unit can carry your defense through Wave 50 and beyond, making it the most efficient investment per roll.

Should I chase legendary units or focus on merging rare units? For most players, focusing on merging rare units is more practical than chasing legendary pulls. A rare unit at Merge 3 outperforms an un-upgraded legendary unit for most of the game. Legendary units are aspirational goals best pursued after establishing a stable economy. See our Rolling Strategy Guide.

How does luck change which rarities I should target? Higher luck shifts the optimal target upward. At base luck, rare units (1/100K) are the practical goal. With +5 luck from full stacking and rebirths, high rare units (1/1M) become realistic targets. At +15+ luck, ultra rare units (1/10M) enter the achievable range. For luck strategies, see our Luck Boost Guide.

Are uncommon units worth merging? Only as a temporary measure for the mid-early game transition (Waves 10-20). Do not invest heavily in merging uncommon units — save your duplicates for rare and higher-tier units instead. For merging priorities, see our Merging Guide.

For official information about Roll to Defend, visit the Roblox game page.