Rail Defence vs Do [Not] Forget
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Rail Defence
Defend your castle from waves of enemies by strategically placing and upgrading weapons on a circular railway. Utilize special powers and enhanced armaments to repel increasingly formidable foes and protect your stronghold.
- Circular railway defense
- Acquire new weapons
- Upgrade weapons
- Strengthen defenses
- Special powers
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Defend your castle on a circular railway. Acquire new weapons as you gain experience. Strengthen your weapons and keep increasingly larger enemies away from your castle. Strengthen your defences by using special powers and weapons.
Do [Not] Forget
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DNF is a retro-styled memory game rendered on a glowing CRT phosphor screen. Each trial, a pattern of cells lights up on a 5x5 grid.Study it. Then recreate it from memory. Sounds simple — until the patterns grow larger and the display time shrinks.
Screenshots
Verdict
The clearest difference is in-app purchases: Do [Not] Forget at none against Rail Defence's 18. Do [Not] Forget also leads on ads (none vs shown) and update cadence (every 3 days vs fortnightly). Rail Defence's advantage is iOS requirement (13.0 vs 15.0). On price 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
Both are free to download. Rail Defence sells 18 one-off in-app purchases. Do [Not] Forget asks for nothing beyond the download.
Rail Defence ships an update fortnightly, Do [Not] Forget every 3 days. The most recent releases landed on October 21, 2026 and October 17, 2026 respectively.
| Parameter | Rail Defence | Do [Not] Forget |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (1.1K ratings) — better | — |
| Positive reviews | 1.7% of reviews | — |
| Number of ratings | 1.1K — better | — |
| Update frequency | Fortnightly | Every 3 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 156 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Upperpik Oyun Yazilim ve Pazarlama Ticaret Anonim Sirketi | Ilias Rafailidis |
Bugs and requests
Rail Defence
Reported bugs
3 issues- The bomb does not work after a few seconds
- Randomly the weapons won't work
- The crossbow stops working after a while
Requested features
3 requests- More levels
- Different zombies
- More upgrades
Do [Not] Forget
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Rail Defence
- Cash kickstart pack$1.99
- 10 Tickets$1.99
- Manager$2.99
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- Money Fountain Pack$2.99
- Engineer$2.99
- 20 Tickets$2.99
- Big Deal Pack$3.99
- Financier$3.99
- Royal Treasury Pack$4.99
- 50 Tickets$4.99
- No Ads$4.99
- Bundle$5.99
- Treasury Trove Pack$5.99
- 30 Tickets and No Ads$5.99
- Mega Bundle$7.99
- Big Vault Pack$8.99
- Ultra Bundle$10.99
- Big Chest Treasure$11.99
Do [Not] Forget
No in-app purchases
Questions
Is Rail Defence free?
Is Do [Not] Forget free?
Do Rail Defence or Do [Not] Forget have ads?
Which is updated more often, Rail Defence or Do [Not] Forget?
Other comparisons
![Do [Not] Forget](https://cdn3.appshunter.io/i/Purple221/a07c1d5b6e806f48223c836743b9a772/AppIcon-0-0-1x_U007epad-0-1-85-220.png/640x0w.webp "Do [Not] Forget")
