The circus is on and the clowns and are making their dive-in-a-barrelnumber, but… there are chains holding them and trampolines, traps, man-cannons and all sorts of obstacles.

Cut the clowns chains with the right timing and get them to the right barrel. Green clowns go in the green barrel, blu clowns in the blu ones and so on… you get the idea.

If you don’t want to spend the $1 right away, you can try Clown College as a warmup. It’s free and it gives you the first 15 levels for free. But, trust us, you will want to pay the $ 1 for the extra levels right away.

Clowning Around is just a gorgeous game, already a success on iPhone and Android is now delighting your Windows Phone.

The graphics are top notch, but the music jingle is really annoying: do your ears a favro and turn it off, it will ruin your experience.

Ace Viral got the inspiration from Cut the Rope, true, but mixed in multiple elements that will make it as fun and even more challenging.

Waves of enemies of different shapes and colors come down the screen while you defend the bottom with your lonely gun, which fires shots in every direction you can tap.

You have a selection of different gun types: from the basic pistol to lasers, mines, spread guns, freeze and missile). Guns level up the more you use them, and you can equip multiple ones for specific battles, switching among them as you go – in our gameplay sometimes the guns got activated without control, though, which was somewhat annoying in the harder levels.

Gameplay is hectic and exciting; multiple waves of enemies come down really fast, forcing you to multi-tap and to make quick decisions on which enemy to take on first as well as which weapons to use.

Both game art and music are great, especially the gameplay music, which will ring in your head for quite a while after playing; social gaming features such as leaderboards complete a very solid package which gave us quite some fun.

The developer, StackPop Studios, offers Chromatic in a free version as well as an ads-free paid one, and we recommend you to give it a whirl – check the gameplay video below!

Available for Windows Phone 7 (Mango only), Android, iPhone, Nokia and Blackberry, WhatsApp simply allow you to send text messages, a picture taken from your WP7 phone photos, Facebook or Skydrive, or your GPS location to another user of the same app.

The genial idea around this app is that you register using your phone number. So people that have your number on their contact list can immediately see you as part of the WhatsApp network.

Remember the first days of Facebook when you were like: “oh, look this guy is also here, let’s send him a message…” – well this works on WhatsApp too: when you register the app will find all of your contacts who have the app installed so you can text them immediately.

If a friend is not in the list, you can invite them to install WhatsApp via email or regular text message, so you can message them for free after that!

WhatsApp is free on the Windows Phone, go grab it before you need to start paying for it!

The physics engine is good, the game is fun and the level progression pretty adequate: first ones go in a breeze, but the last few require thinking with trial and error attempts. Right now there are 25 available levels plus an additional pack which is “coming soon”.

Monster Stack is the fourth game of the series for Health Pack Games, what is striking is that this game is free, but it has all what’s needed to be an awesome paid game! Art design is beautiful, gameplay is enticing and music is entertaining!

But wait… there’s more! There is a level editor to create your own levels! And social game features such as achievements (scoreboards are coming soon…).

We thanks Health Pack Games for such a beautiful, FREE, game!

The feed reading experience comes in three themes: Ribbon, Ipsum and Square. All three are somewhat original and not banal; we prefer Ribbon that mixes text and images.

Fuse comes with 5 preconfigured feeds, including Engadget, MTV and LA Times, but you can, of course, add your own favorite feed or youtube channel.

The app is integrated with Google Reader in the sense that you can import one or more of your feeds here, and this is a very useful feature.

The social integration includes Facebook and Twitter – plain – but also Read it Later and Instapaper – original.

The reading experience is what matter most on an RSS read – and here Fuse is offering a solid experience. Looking at the highlights with the pictures is snappy – one of the best on WP7 – and the detail read is clear and fast too.

If you are looking for an elegant and efficient RSS reader on WP7, give a try to Fuse, you might decide to stick with it.

The app starts with a Featured section with a handful of current hits (Beyonce, Coldplay for example) or video playlists. What’s hot is another section with video suggestions that is presented in a beautiful Metro panorama.

You can search for music or browse videos, artists and playlists. When the video starts you get to watch an ad (we got to view always the same ad during our tests) and check out some Trivia info about the artist.

The video quality is amazing: in high definition and starting immediately, when you use Wi-Fi – but still good on 3G.

A long streak of big names app has been released right after Angry Birds, to confirm that the game is the consecration of the WP7 platform to the mount Olympus of mobile platforms. Vevo is one of them and will shine on your Windows Phone 7.

Orientile is a puzzle game: you connect the dots with lines on a board, when you close a two by one square you can claim the enclosed empty tiles and play again. The player that controls the most squares at the end of the game wins.

The authors of Quadrata and Triangula created another beautiful game with Orientile: the art and design is just great, we loved the quality and overall care and production level that this game shows: the menus, the board, the characters the sound effects, all is made with great style.

The best part is that the game is also fun. The single player is challenging, the opponents are smart and have different style of play, but all are tough to beat and require focus and plan-ahead attitude. The local multiplayer is possibly the best part of this game: allowing two friends (or parent and child) to spend some good time playing together in a sophisticated version of tic tac toe, if you will.

Orientile is free and should not be missed in your tap-library – check it out.

These are not our words, but USA today’s analysis of the latest announcements around the next version of Windows Phone. The same USA Today released in May a gorgeous news app, with great Metro-based user interface and snappy experience.

The app is what you expect: USA Today news are on the home screen, where you can see the top article with a picture and the others with just the headline. Tap on an article and you go see the details. You can share the article on email, sms and social networks (Twitter and Facebook). Nothing fancy. BUT FAST! And to the point: the app is there to provide news, not bells and whistles.

On the home page a weather icon on the top right sends you to a detailed page with info coming from Accuweater.com. Again: fast and to the point: current conditions, 5 days forecast and radar. What you want, now.

Back to the home screen all the colored sections of the national paper (News, Money, Sports, Life and so on) together with a picture section. All is beautiful (thanks to the great Metro integration) and snappy.

This is a gorgeous app. It rivals our preferred news apps News 360 and Drudgeraptor.

Technically, USA Today is one of the best app on the marketplace, avoid it only if you don’t like the content – otherwise just tap on the icon below, it’s free!

A few weeks back we reviewed Kids TV, an app to view older cartoons on your WP7 straight from YouTube channels. Cartoon TV is the same concept, but there is MUCH MORE CONTENT here than in Kids TV.

Cartoon TV allows you to watch a live channel or view classic videos. The selection on classic videos is impressive: From Bugs Bunny to The Flintstones, from Mickey Mouse to Popeye, from Tom and Jerry to Spiderman, the list is very very long, and getting longer.

Again, they are simply links to videos available on You Tube, but here the value is in having collected all this directory information in a single app. The quality of the You Tube videos is usually low, but this is intended as entertainment on the go for agitated kids that need some relax, so we think this is ok.

The $ 1.99 are well spent, the work required to maintain the video catalog is worth it. New series are being added along, making the investment future proof as well. If you have kids or just want to watch some classic cartoons on your Windows Phone, download Cartoon TV, you will be glad you did.