Underground Merge vs 深海8000
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Underground Merge
Combine items to craft magical goods for adventurers and earn gold. Expand and decorate your unique underground hotel by unlocking new areas and decorations. Enjoy various engaging game modes.
- Combine items to create exotic goods
- Fulfill adventurer orders for rewards
- Unlock and decorate hotel areas
- Engage in various gameplays
- Earn gold and hexagrams
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Underground Builder is a fun combination and management game. You will create all kinds of magic items for adventurers in exchange of Gold Coins and Hexagrams to unlock more areas and decorations. Let’s build your own unique underground hotel! ●Combination! Drag and combine to create exotic items. ●Orders! Provide what adventurers need and get rewarded. ●Building! Unlock new areas and decorate your hotel. ●Gameplays! Hades’ Blessing, Bard’s Visit, Castle Clean-up… all for you to enjoy. It’s time to stop putting yourself in danger. Let’s make money out of adventurers now!
深海8000
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指一本で潜水艇を操縦し、海の生き物を迎えに行こう。 連れ帰った生き物は水槽でおしゃべりし、お客さんを呼んでくれる。 来館収入で船を改良して、めざすは水深8000m。 ■ 自分で操縦して迎える 指一本で潜水艇を動かし、生き物に近づいてアームで回収。大物には引っ張られる! ■ 実在の深海生物47種 ラブカ、リュウグウノツカイ、シーラカンス、マリアナスネイルフィッシュ……。深く潜るほど暗くなり、見たことのない姿に出会えます。 ■ しゃべる水槽 連れ帰った生き物は大きな水槽で泳ぎ、休み、おしゃべり。拡大すると会話が読めます。気に入った眺めは写真にして共有できます。 ■ 人と大きさくらべ 図鑑で身長1.7mの人と並べて、大物の大きさを実感。 ■ 留守中も来館収入 閉じている間もお客さんが来てお金が貯まります。そのお金で潜水艦を強くして、もっと深くへ。 ■ 広告は自分で押した時だけ バナー広告も、遊んでいる途中に割り込む広告もありません。 任意の広告による資金ボーナスと留守中収入2倍、買い切りの追加効果、繰り返し購入できる資金チャージを用意しています。遊ぶのに広告の視聴や購入は必須ではありません。 ゲームの進行は端末内に保存します。アプリ独自のゲーム進行のiCloud同期はありません。
Screenshots
Verdict
The clearest difference is device support: Underground Merge at 3 against 深海8000's 1. Underground Merge also leads on iOS requirement (14.0 vs 17.0). On price, update cadence, ads and in-app purchases 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
Both are free to download. Underground Merge sells 9 one-off in-app purchases and 深海8000 sells 7 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Underground Merge ships an update every 5 days, 深海8000 every 11 days. The most recent releases landed on October 30, 2026 and November 10, 2026 respectively.
| Parameter | Underground Merge | 深海8000 |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 5 days — better | Every 11 days |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 14.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 239 MB | 71 MB |
| Age rating | 9+ | 4+ |
| Developer | Pujia8 Limited | Riki Kamei |
In-app purchases
Underground Merge
- Ad-Free$0.99
- Ad-Free$1.99
- Resource Monthly Card$4.99
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- Treasure Chest Open Happy$4.99
- Premium Pass2 variants$4.99
- Ad-Free$4.99
- Newcomer Special$4.99
- Advanced Special$6.99
- senior Special$9.99
深海8000
- 資金チャージ$1.99
- 初心者探索パック$2.99
- 留守中収入2倍$2.99
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- 水族館応援パック$3.99
- 広告スキップ$3.99
- 来館収入2倍$3.99
- 探索スタートセット$4.99









