- Tower Lab research improves scaling, progression limits, and quality-of-life systems.
- Game Speed and Labs Speed are strong early priorities for faster long-term progress.
- Five lab slots are available, with later slots requiring a total of 4,900 gems.
- Balanced boosts usually provide better value than placing one lab at a very high multiplier.
- Auto Research and Lab History help reduce downtime and organize your research plan.
Tower Lab research priorities
Tower Lab research is the long-term upgrade system for improving core progression, workshop efficiency, combat statistics, utility systems, and specialized mechanics. Most research becomes available after milestone unlocks, so the best plan changes as new labs and systems open.
Start by protecting research uptime. A lab that is always active gradually creates more value than a short-term choice that looks stronger but leaves research idle. Early accounts generally benefit from upgrades that improve game speed, research speed, economy, and broad combat performance.
Progression
Game Speed and Labs Speed shorten the time needed to reach future milestones and complete later research.
Economy
Starting Cash, workshop discounts, cash bonuses, and coin bonuses improve spending power across many runs.
Combat
Damage, Attack Speed, Health, and defensive research strengthen the tower in repeated waves.
Utility
Target Priority, Card Presets, Auto Pick Perks, and respec options reduce management friction.
Prioritize upgrades that help several systems at once before investing heavily in narrow bonuses with limited use.
| Priority | Research focus | Why it matters |
|---|---|---|
| High | Game Speed | Improves overall run pace and increases the number of research opportunities over time |
| High | Labs Speed | Reduces the completion time of future research |
| High | Damage and Attack Speed | Supports consistent wave clearing and general combat scaling |
| Medium | Health and defensive research | Adds stability when survival is limiting progress |
| Medium | Economy bonuses | Improves cash, coins, and workshop spending across repeated runs |
| Situational | Specialized mechanics | Best when a build already depends on the related weapon, bot, perk, or enemy type |
Lab slots, auto research, and scheduling
The lab system begins with one lab after the relevant early milestone and can expand to five total labs. Additional slots cost gems, so unlocking them is a long-term account decision rather than a temporary upgrade. More slots allow separate research tracks for speed, combat, economy, and utility.
When changing an active research project, the spent coins are refunded and the progress is preserved. The saved progress appears as green lab time, but the research cost must be paid again when the project resumes. This makes switching flexible, but frequent changes can complicate resource planning.
Unlock the first lab
Begin with the first lab when it becomes available at the early milestone. Use it continuously on broad upgrades while learning which systems limit your waves.
Add supporting slots
Unlock additional labs when the gem cost fits your account plan. Use separate slots for different categories instead of repeating the same narrow research.
Enable Auto Research
Open the lab interface and activate the clock icon beside the progress bar. The lab can then begin the next level of its current research after completion.
Review Lab History
Use the History tab when planning future priorities. Completed research is listed chronologically, making it easier to avoid accidental repetition.
| Lab number | Gem cost | Recommended role |
|---|---|---|
| 1 | Free | Main progression research |
| 2 | 100 | Combat or economy support |
| 3 | 400 | Secondary combat or utility track |
| 4 | 1,400 | Specialized build support |
| 5 | 3,000 | Full multi-category scheduling |
Auto Research is useful only when the next level is affordable and appropriate. Check costs before leaving a lab unattended for a long period.
A practical five-lab schedule can use one slot for research speed, two for combat, one for economy, and one for utility. Adjust this pattern whenever a new milestone, ultimate weapon, bot, perk, or module system becomes the main obstacle.
Lab rushes and Elite Cell boosts
Research time can be skipped with gems, while active labs can be accelerated with Elite Cells. A rush skips the entire remaining time rather than a selected portion. Longer rush periods have a lower gem cost per day, so short rushes are convenient while long rushes are generally more efficient.
Boosts can be configured for 1 hour, 8 hours, or 24 hours at multipliers from 1.5x through 8x. The boost is selected through the lab’s Speed Up menu. Boosts only count while a lab is actively slotted for research, so empty or completed labs do not consume productive speed-up time.
| Rush duration | Gem cost | Gems per day | Listed discount |
|---|---|---|---|
| 1 hour | 7.5 | 180 | 0% |
| 1 day | 163 | 163 | 9% |
| 1 week | 1,000 | 142.9 | 21% |
| 30 days | 3,550 | 118.3 | 34% |
| 90 days | 8,000 | 88.9 | 51% |
| 360 days | 25,000 | 69.4 | 61% |
| Boost | 1 hour | 8 hours | 24 hours |
|---|---|---|---|
| 1.5x | 15 cells | 120 cells | 360 cells |
| 2x | 100 cells | 800 cells | 2,400 cells |
| 3x | 840 cells | 6,720 cells | 20,160 cells |
| 4x | 3,360 cells | 26,880 cells | 80,640 cells |
| 5x | 11,900 cells | 95,200 cells | 285,600 cells |
| 6x | 60,000 cells | 480,000 cells | 1,440,000 cells |
| 7x | 250,000 cells | 2,000,000 cells | 6,000,000 cells |
| 8x | 1,000,000 cells | 8,000,000 cells | 24,000,000 cells |
Spread moderate boosts across several active labs before using an expensive high multiplier. This approach can provide more total accelerated research for the same cell budget.
Boost costs rise faster than the multiplier. For example, moving from 1.5x to 2x increases the base cost substantially, while the additional time saved may be modest. Automatic boost queuing is useful for scheduled play sessions, but review the selected multiplier and duration before confirming the queue.
Research categories and upgrade planning
A strong research queue balances immediate survival with long-term account value. Combat research is often the easiest way to solve a wave barrier, while economy and speed research improve the quality of future runs. Utility research becomes more valuable as the account gains more cards, perks, modules, bots, and weapon systems.
The following categories summarize the main research groups and their known maximum levels. These caps help identify broad research tracks, but a higher cap does not automatically mean the upgrade deserves immediate priority.
| Category | Examples | Known caps |
|---|---|---|
| Main | Game Speed, Starting Cash, discounts, Labs Speed, Target Priority | Game Speed 7; many options reach 99 |
| Attack | Damage, Attack Speed, Critical Factor, Range | Damage 100; Attack Speed 99; Range 80 |
| Defense | Health, Health Regen, Defense Absolute, Defense% | Health 100; Defense% 50 |
| Utility | Cash Bonus, Cash/Wave, Coins/Kill Bonus, Coins/Wave | Many options reach 99 |
| Weapons and bots | Missile, Chrono Field, Second Wind, bot cooldowns | Caps vary from 1 to 30 |
| Enemies and modules | Enemy health, enemy attack, reroll shards, module costs | Caps vary from 10 to 100 |
Use this decision order when choosing between several affordable projects:
- If runs end because enemies survive, select damage, attack speed, critical, or relevant weapon research.
- If runs end because the tower is overwhelmed, select health, defense, health regeneration, or a matching defensive upgrade.
- If progress is slow despite stable survival, select game speed, lab speed, economy, or workshop discounts.
- If management time is the main problem, select Auto Pick Perks, Card Presets, Target Priority, or respec improvements.
- If a specialized build is already established, invest in the research that directly supports its main damage or survival loop.
Research Planning Checklist:
- Keep every unlocked lab assigned to affordable research
- Check whether speed or combat is the current progression limit
- Use Auto Research for reliable queue continuity
- Compare Elite Cell costs before selecting a high multiplier
- Review Lab History before changing a long research chain
Specialized research is strongest after the related system is active. Until then, broad speed, economy, attack, and defense upgrades usually offer more flexible value.
A practical 2026 Tower Lab research route
This route is designed for steady progression rather than a single short-term milestone. It works best when adapted to the tower’s current bottleneck. Research levels, milestone access, and available systems can change with progression, so treat the order as a framework.
| Progress stage | Main objective | Suggested research |
|---|---|---|
| Early | Establish continuous progress | Game Speed, Starting Cash, basic Damage, Attack Speed, Health |
| Expansion | Improve research throughput | Labs Speed, additional lab slots, workshop discounts |
| Midgame | Stabilize wave performance | Critical Factor, defensive research, economy bonuses |
| System growth | Support broader account systems | Card Presets, Target Priority, perk and bot research |
| Advanced | Optimize a chosen build | Weapon, bot, enemy, module, and specialized enhancement research |
Identify the bottleneck
Compare the wave where progress stops with the resources gained during the run. Decide whether damage, survival, economy, or research time is the limiting factor.
Assign categories
Give each available lab a clear role. Avoid placing every slot into one category unless a specific milestone requires concentrated investment.
Protect the queue
Enable Auto Research where practical, keep enough coins available for the next level, and use Lab History to track completed priorities.
Spend boosts selectively
Use Elite Cells during active research windows. Favor several moderate boosts when the goal is to accelerate multiple labs efficiently.
Reassess after milestones
Rebuild the queue after unlocking a new lab, weapon, bot, perk, module, or research branch. A new system can change the best priority.
For most accounts, a balanced queue of speed, combat, economy, and utility research is safer than chasing one maximum-level upgrade.
Q: What is the best first Tower Lab research priority?
Game Speed and Labs Speed are strong early priorities because they improve the pace of both gameplay progression and future research. Pair them with basic Damage, Attack Speed, or Health when a combat wall appears.
Q: How many labs can be unlocked?
The system supports up to five labs. The listed gem costs for labs two through five are 100, 400, 1,400, and 3,000, for a total of 4,900 gems beyond the free first lab.
Q: Is rushing a lab worth the gems?
Rushing is most efficient for longer remaining research periods because the listed gem cost per day decreases with duration. Use it when finishing a project unlocks an important milestone or removes a major progression barrier.
Q: Which Elite Cell boost should be used?
A 1.5x boost is usually the most economical starting point for multiple active labs. Higher multipliers can be useful when time is urgent, but their cell costs rise sharply and should match your available generation.