Critical vs HVZ
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Critical
Manage a reactor to prevent it from becoming critical by delivering water. Earn money over time to unlock permanent upgrades and improve your survival capabilities. Invest wisely to extend your runs and uncover secrets.
- Reactor management
- Incremental income generation
- Permanent upgrades
- Research and secrets
- Survival gameplay
Read full descriptionHide full description
Stop the reactor from going critical by delivering water. Robots are expensive though, so we use cheap expendable personnel instead. Money earned ramps up incrementally the longer you last. Survive as long as possible to maximize your income! Spend your hard earned cash to unlock permanent upgrades. Invest wisely to make each new run longer than the last. Tons of upgrades to buy, research to be done, and secrets to uncover. Give it a try! The longer you can keep the reactor from exploding, the more money you’ll make. Start small and watch your income grow exponentially as you survive longer and longer. Delay the inevitable cataclysm as long as possible and watch your cashflow go through the roof.
HVZ
A campus-wide game where players are divided into humans and zombies. Humans defend themselves with Nerf blasters and complete objectives, while zombies tag and infect humans to turn them. Participation requires attending an information session.
- Campus-wide game
- Humans vs. Zombies gameplay
- Tag and infection mechanics
- Nerf blaster defense
- Objective-based missions
- Teamwork and problem-solving
Read full descriptionHide full description
Humans vs Zombies is an exciting and immersive campus-wide game combining tag, problem-solving, and teamwork. In HVZ, players are divided into two teams: humans and zombies. Zombies tag and "infect" humans, turning them into zombies. Meanwhile, humans must defend themselves using Nerf blasters while completing objectives or missions. What side will you choose? Attend an Information session to learn more about this year’s Humans Vs. Zombies. Players must attend an information session to participate. *This app is designed for students and staff of Kennesaw State University*
Screenshots
Verdict
The clearest difference is rating: HVZ at 5.0 against Critical's 4.4. HVZ also leads on in-app purchases (none vs 17) and ads (none vs shown). Critical's advantage is ratings volume (125 vs 2). On price, device support and iOS requirement 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. Critical sells 17 one-off in-app purchases. HVZ asks for nothing beyond the download.
HVZ holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Critical has 125 ratings behind it against 2, so its average is the more settled of the two.
Critical ships an update fortnightly, HVZ every 6 days. The most recent releases landed on October 13, 2026 and October 6, 2026 respectively.
| Parameter | Critical | HVZ |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (125 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 18.2% of reviews | — |
| Number of ratings | 125 — better | 2 |
| Update frequency | Fortnightly | Every 6 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.0 — better | 13.4 |
| Further details — not scored | ||
| Size | 99 MB | 57 MB |
| Age rating | 4+ | 12+ |
| Developer | WaffleStack Studio LLC | Jayceb Dhonau |
Customer experience
Critical
HVZ
In-app purchases
Critical
- 100 Gems$2.99
- 100 Gems$4.99
- Remove Ads$7.99
Show 14 moreShow fewer
- 225 Gems$7.99
- Starter Pack$9.99
- Remove All Ads$9.99
- 225 Gems$9.99
- 500 Gems$9.99
- Pro Pack$9.99
- Pro Pack$14.99
- New Player Sale$14.99
- 500 Gems$14.99
- 1400 Gems$19.99
- 800 Gems$19.99
- 1400 Gems$29.99
- 3000 Gems$29.99
- 3000 Gems$39.99
HVZ
No in-app purchases









