If you're into casual, low-stress games that let you kill time without needing to think too hard, Color Oasis - Color by Number is one of those apps that just works. This is a classic color-by-number puzzle game, and it's pretty much what you'd expect from the genre. It's available on Android via the Google Play Store and also on the App Store for iOS users. As far as I can tell, it's purely a mobile game—no PC release on Steam, no console version for Xbox or Switch. The game launched a couple of years ago and has racked up over 10 million downloads on Google Play alone, which tells you it has a solid player base. It's free to download and play, which is great, but you will run into in-app purchases. The typical costs range from around $0.99 to $9.99 for coin packs or ad removal, and there are also optional subscription options if you want access to premium images. There are in-app ads, too, but they're not too aggressive—mostly after you finish a picture or between levels.

Playing Color Oasis is pretty straightforward. You open the app, pick an image from a huge library, and start tapping numbers to fill in the sections. Each number corresponds to a specific color, and you just tap sections to paint them. The best part for me is how relaxing it is. I usually play this on my phone during my commute or right before bed. There's no pressure to finish quickly, no timers, no lives—just you and the picture. My favorite part is actually seeing the image come together. Some of the detailed pictures, like landscapes or animals, look really impressive when completed. The app also offers a zoom feature for finer details, which helps with the more complex designs. The color palette is vibrant, and the controls are smooth on both Android and iOS devices. You can even save your progress mid-way and come back later, which is super convenient.

Compared to other color-by-number games like Happy Color or Color by Number: Pixel Art, Color Oasis holds its own pretty well. I've tried those other apps, and while they're fine, Color Oasis feels more polished and has a larger variety of images, especially if you like nature or fantasy themes. The interface is cleaner and less cluttered with ads, which is a big plus. Happy Color has way too many pop-ups for me, but here, the ads are mostly optional or tied to extra coins. If you want a pure, distraction-free experience, the ad removal is worth the price. The app also updates regularly with new pictures, so you never run out of things to color. Honestly, if I had to pick just one color-by-number game from the Google Play Store, it'd be this one. It's simple, satisfying, and doesn't try to overcomplicate things.

• Vast Image Library 🎨: Color Oasis has hundreds of pictures, ranging from simple flowers to detailed fantasy scenes. Happy Color, for comparison, has fewer categories and often reuses similar patterns. This app gets fresh content every week, so you're never bored.
• Zoom and Precision 🔍: You can zoom in to fill small sections without missing pixels. This is a huge deal for complex artwork. Other apps like Pixel Art Color by Number don't handle zoom as smoothly, often causing lag. Here, it's buttery smooth on my Android phone.
• No Timer or Stress ⏳: Unlike some games that push you to finish quickly, Color Oasis lets you take your time. No energy bars, no countdowns—just pure, chill coloring. That's a big win over apps like ColorMe, which sometimes add time limits for rewards.

• Relaxing and Meditative 😌: This game is perfect for winding down. The simple tap-and-fill mechanic is super satisfying, and without any time pressure, you can just zone out. It's better than Happy Color for this because Happy Color often interrupts with ad videos after every picture.
• Regular Updates and Events 📅: The devs keep adding new images and even run themed events, like holiday collections. On Google Play, you can see the update history—it's consistent. Other games I've downloaded eventually die out, but Color Oasis stays active.
• Family-Friendly for All Ages 👨‍👩‍👧‍👦: There's no violence, no complicated mechanics—just colors and numbers. My niece loves it on her tablet, and I enjoy it too. It's one of the few apps that's genuinely safe for kids without being boring for adults.

• In-App Ad Frequency 🛑: Look, I get that it's free, but the ads after completing a picture can feel repetitive. Sometimes you get a 15-second video or a static banner. If you play for an hour, it might pop up 5-6 times. Remove them with a purchase if you have the budget.
• Limited Free Coins 💰: You start with some coins, but advanced pictures cost more. If you don't want to pay or watch ads, you'll run out fast. Happy Color gives you a bit more free currency daily, so this is a downside here unless you invest.
• No Multiplayer or Social Features 👥: Unlike games such as Color by Number: Pixel Art, which has leaderboards or sharing, Color Oasis feels lonely. You can't compare progress with friends or trade pictures. It's purely solo, which might bore some players after a while.