Comparison

Tic Tac Toe vs Underdark

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Tic Tac Toe

Features
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Tic Tac Toe as you know it, with one twist: weapons that change the board. Get three in a row, just like always. But every game deals each player a random hand of weapons, and one well-timed move can turn a lost game around. Slide a row so your marks line up. Bomb the mark that was about to beat you. Spin the whole board. The rule stays simple; the game never plays the same way twice. DAILY BOARD A new board every day, the same for everyone: the same size, the same rule, the same weapons on both sides. Play it in a few minutes, share your result as a card, and see how your friends did. Only your first try counts. 12 WEAPONS • Bomb Cell: remove any mark from the board • Spin Row and Spin Column: slide a line one step, wrapping round • Rotate, Flip and Mirror: turn or flip the whole board, or copy your last move to its mirror square • Shuffle: scatter every mark at random. High risk, high reward • Expand Board: add a row and a column, mid-game • Freeze and Extra Time: with the turn timer on, skip your opponent's next turn or buy yourself 15 seconds Each weapon explains itself the first time you use it, so you can jump straight in. PLAY YOUR WAY • Against the computer on Easy, Medium or Hard • Pass and play with someone next to you • Nearby multiplayer over Wi-Fi or Bluetooth, no internet needed • Play repeats your last game in one tap MAKE IT YOURS • Boards from 3×3 up to 24×24 • Choose how many in a row wins, and which directions count • Add a turn timer, from 5 seconds to 2 minutes • 1 to 6 weapons each, or switch them off for classic play EVERY WIN TELLS ITS STORY See how the line was made ("Spin Row completed the line"), keep a record of wins, losses and draws, and build a streak just by turning up. If you like, one gentle reminder in the evening on days you haven't played. Never more than that. FREE, NO NONSENSE No ads. No subscriptions. No account. No tracking. Your record stays on your device. If you enjoy the game, there's an optional tip jar. It unlocks nothing; it just says thanks. Tic Tac Toe: Warfare runs on iPhone, iPad and Mac.

About

Underdark

Defend the Eternal Flame from relentless dark forces in this tactical tower defense game. Strategically place towers, choose powerful buffs, and level up unique heroes to forge an impenetrable defense. Enjoy one-handed gameplay for strategic fun anytime, anywhere.

Highlights
  • Defend the Eternal Flame
  • One-handed gameplay
  • Customize defense strategy
  • Level up heroes
  • Strategic tower placement
  • Choose growth buffs
Features
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Defend the Flame from the dark! Level up, strategically place towers, and choose buffs to grow stronger. Keep the light alive! Defend the Eternal Flame: Experience the thrill of defending the flame from hordes of dark forces that besiege it! Feel the exhilaration as you clear stages, with each victory more satisfying than the last. One-Handed Gameplay: Enjoy easy-to-master controls, designed for one-handed play. Perfect for strategic fun anytime, anywhere. Customize Your Defense Strategy: Select buffs and strategically place towers to forge your path of resistance. As you level up and choose your growth buffs, your defense becomes an impenetrable fortress. Heroic Stand: Choose your guardians to stand against the night. Each hero brings unique abilities to the battlefield. Earn trophies, level up, and enhance your heroes to ensure the flame flickers on through the darkest nights!

Screenshots

Tic Tac Toe4 screens
Underdark4 screens

Verdict

The call

The clearest difference is ads: Tic Tac Toe at none against Underdark's shown. Underdark's advantage is update cadence (every 4 days vs every 3 months) and iOS requirement (15.0 vs 17.6). On price, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Tic Tac Toe sells 4 one-off in-app purchases and Underdark sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Tic Tac Toe ships an update every 3 months, Underdark every 4 days. The most recent releases landed on November 3, 2026 and November 10, 2026 respectively.

Scorecard3 real differences · 7 level
Tic Tac Toe versus Underdark: the parameters behind the verdict, then further details
ParameterTic Tac ToeUnderdark
PriceFreeFree
Rating—4.8 (4.1K ratings) — better
Positive reviews—72.0% of reviews
Number of ratings—4.1K — better
Update frequencyEvery 3 monthsEvery 4 days — better
AdsNo — betterYes
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS17.615.0 — better
Further details — not scored
Size3 MB521 MB
Age rating4+4+
DeveloperRalf KochSeungHo Chung

Bugs and requests

Tic Tac Toe

Not enough reviews yet to summarise bugs or requests.

Underdark

Reported bugs

3 issues
  • Goblin tower factory causing game slowdown
  • Consecutive login rewards reset after updates
  • Invisible towers in multiplayer

Requested features

5 requests
  • Ability to rotate towers
  • Move towers after placement
  • More enemy variety and animations
  • Improved co-op mode
  • Simplified progression system

In-app purchases

4 purchases

Tic Tac Toe

One-time4
  • Tip - Small$0.99
  • Support Development$2.99
  • Tip - Medium$2.99
Show 1 more
  • Tip - Large$4.99
10 purchases

Underdark

One-time10
  • daily_package_01$0.99
  • blade_pakcage$2.99
  • daily_package_02$2.99
Show 7 more
  • exp_2x$3.49
  • Event Package 2$3.99
  • add_speed$7.49
  • season_superpass_1$7.99
  • pack_remove_ads$7.99
  • pack_remove_ads2$10.99
  • season_hyperpass_1$18.99

Questions

Is Tic Tac Toe free?
Tic Tac Toe is free to download, with in-app purchases available.
Is Underdark free?
Underdark is free to download, with in-app purchases available.
Do Tic Tac Toe or Underdark have ads?
Underdark shows ads; Tic Tac Toe does not.
Which is updated more often, Tic Tac Toe or Underdark?
Tic Tac Toe ships an update every 3 months, and Underdark every 4 days. Most recently, Tic Tac Toe was updated on November 3, 2026 and Underdark on November 10, 2026.

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