Comparison

Robots On vs PIYON'S GUARDIAN

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

Head to head
About

Robots On

Engage in a fast-paced arcade shooter where you must blast through waves of killer robots. Utilize power-ups and strategic targeting to survive increasingly difficult levels in this retro-inspired game.

Highlights
  • Intensive arcade gameplay
  • Multiple camera angles
  • AI-powered robot enemies
  • Power-up collection
  • Retro 2D mode
  • Rapid fire controls
Features
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Robots On Can you defeat the swarm of killer robots in this old school arcade classic. This is a quick moving intensive arcade game, you will need to keeps moving and keep blasting to stay alive. The robots are attacking in this retro game from the days of classic arcade games. Play flat 2D mode like the original arcade games, or tap the camera icon to zoom in on action and play from several different camera angles including 1st and 3rd person modes. These Robots run the latest Artificial Intelligence (AI 2.0a), but they are still not quite as smart as us humans. I'm assuming you are a human, please forgive me if you are ... er something else... Anyway another advantage is that you get about a 2 second start on the robots, while they are powering up, but all too soon its "Robots On" and you need to move. Make the most of the vital few seconds to target the most powerful and difficult robots first. The action is manic, you are out numbered a thousand to one by the collective bunch of evil killer robots. To get to the next level you must destroy all Robots, accept the Grunts which are indestructible. Be sure to collect the specials and power ups along the way :- Star : Auto aim on, this will override aiming for a short term and target the most dangerous robots. Diamond : Shields Cherry: Big points. Heart: Bonus Life. Lightning: Robots freeze until recharged. You start with 5 lives, but will get bonus lives, initially every 5000 points, later every 10,000 points. Here's a quick guide to the Robots :- Reds, - Common worker bots, shoot lasers from eyes. Greens, Grunt bots. heavy indestructible, avoid. Brain Bots. Shoot homing missiles - deadly Torus Bull Bots - replication bots. Wil make other deadly robots. Cake Bots. Fly straight at you, so keep moving. Cube Bots - A faster replication robot, makes deadly cash registers. Cash registers - Another deadly android, shoot bouncing electric balls. Dumb blocks - Harmless, unless you run into them. Firing controls - Tap on the board, or on a robot to fire in that direction. Tap off the board to fire straight ahead. Hold finger down for rapid fire. That's it, easy - download "Robots On" now and help prevent the killer Robots from overwhelming the human race.

About

PIYON'S GUARDIAN

Experience a retro electronic game with unique characters and gameplay variations. Recreate a nostalgic atmosphere with authentic instructions and visual elements. Enjoy a classic gaming experience designed for a simpler time.

Highlights
  • Unlockable characters with unique rules
  • Easier 'Game B' mode without companion
  • Nostalgic atmosphere recreation
  • Authentic retro instructions
  • Deteriorating reflectors and polarizers
Features
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- Easy Mode B There is also an easier mode, Game B, in which your companion Piyon does not appear. - Elements of gameplay As you play through the game, you will unlock new characters that you can use. The rules are a little different for each character. - Recreating a nostalgic atmosphere The instructions that come with the electronic game reproduce the atmosphere of the time. In addition, you can play with deteriorating reflectors and polarizers. I hope you enjoy the nostalgic sense of play!

Screenshots

Robots On4 screens
PIYON'S GUARDIAN4 screens

Verdict

The call

The clearest difference is price: Robots On at Free against PIYON'S GUARDIAN's $0.99. PIYON'S GUARDIAN's advantage is rating (5.0 vs 1.0) and ads (none vs shown). On review sentiment, ratings volume, update cadence 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

CostPrice · In-app purchases · Ads · Monetization

Robots On is free to download; PIYON'S GUARDIAN costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

PIYON'S GUARDIAN holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Robots On ships an update every 31 months, PIYON'S GUARDIAN every 19 months. Both last shipped on November 3, 2026.

Scorecard5 real differences · 5 level
Robots On versus PIYON'S GUARDIAN: the parameters behind the verdict, then further details
ParameterRobots OnPIYON'S GUARDIAN
PriceFree — better$0.99
Rating1.0 (1 ratings)5.0 (1 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings11
Update frequencyEvery 31 monthsEvery 19 months — better
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supported — betterPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS13.011.0 — better
Further details — not scored
Size62 MB44 MB
Age rating12+4+
DeveloperGalatic DroidsHideki Kubo

Customer experience

Robots On

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

PIYON'S GUARDIAN

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Robots On

No in-app purchases

None

PIYON'S GUARDIAN

No in-app purchases

Questions

Is Robots On free?
Robots On is free to download, with no in-app purchases.
Is PIYON'S GUARDIAN free?
PIYON'S GUARDIAN costs $0.99, with no in-app purchases.
Which has better reviews, Robots On or PIYON'S GUARDIAN?
PIYON'S GUARDIAN is rated higher. Robots On averages 1.0 out of 5 from 1 ratings, while PIYON'S GUARDIAN averages 5.0 from 1 ratings.
Do Robots On or PIYON'S GUARDIAN have ads?
Robots On shows ads; PIYON'S GUARDIAN does not.
Which is updated more often, Robots On or PIYON'S GUARDIAN?
Robots On ships an update every 31 months, and PIYON'S GUARDIAN every 19 months. Most recently, Robots On was updated on November 3, 2026 and PIYON'S GUARDIAN on November 3, 2026.

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