Solid Line vs Bullet Engineer
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Solid Line
Arrange cards by color and sequence to clear the game board. A simple yet engaging puzzle experience.
- Card stacking gameplay
- Color matching
- Sequence ordering
- Board clearing mechanics
- Puzzle solving
Read full descriptionHide full description
Stack the cards in the correct colors and in the proper order, and clear the board.
Bullet Engineer
Read full descriptionHide full description
Bullet Engineer is a fast-paced pixel-art roguelike shooter where every run unlocks new weapons, shells, upgrades, trophies, and prestige ranks. Fight endless waves of enemies, complete missions, master powerful shell types, and climb through the prestige system to become the ultimate Bullet Engineer. Features: • Fast arcade gameplay • Unique shell upgrades • Prestige progression • Daily missions • Weekly challenges • Unlockable trophies • Pixel cyberpunk visuals • Offline gameplay
Screenshots
Verdict
The clearest difference is update cadence: Bullet Engineer at weekly against Solid Line's every 3 weeks. Solid Line's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 18.6). On price, 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. Neither carries in-app purchases, so what you see is what you pay.
Solid Line ships an update every 3 weeks, Bullet Engineer weekly. The most recent releases landed on October 3, 2026 and September 26, 2026 respectively.
| Parameter | Solid Line | Bullet Engineer |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 weeks | Weekly — better |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 190 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | DK Bilgi Teknolojileri | Ibrahim Al-Dossrai |
In-app purchases
Solid Line
No in-app purchases
Bullet Engineer
No in-app purchases
Questions
Is Solid Line free?
Is Bullet Engineer free?
Do Solid Line or Bullet Engineer have ads?
Which is updated more often, Solid Line or Bullet Engineer?
Other comparisons
