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Jet Pack Adventure is a singleplayer game in that can accessed through the Club Penguin Rewritten Beacon.
Players could bring their
Green Puffles into this game, which helped collect coins.
Players travel from location to location using a jetpack, collecting coins along the way. If the player runs out of Jet Packs, a short cut scene shows the penguin falling from the sky and falling (in the Mine levels, the player does not reach the floor). Extra fuel and 1-ups can be collected, but you must watch out for anvils and coffee bags. Other occasional obstacles may come, such as a shark or fish.
If the player makes it to the end of Level 5, they travel to the
Mine. If a player loses before the end of the game, he or she will land in the room they were flying above before they lost, which is unknown when you are flying.
Take off and return to the launch pad
Fuel Rank 1
Collect all fuel cans in Level 1
Bring a green puffle into the game
Complete the game without collecting any coins
Your green puffle gets a gas can when you run out of fuel
At around halfway on the mountain climb at the end of Level 3, the player will sometimes experience collisions with invisible obstacles, losing fuel as a result.
If the player finishes the game with no
coins, by not collecting them in the levels and getting no fuel bonus, they will get a 1000 coins and an extreme stamp. Level 1 is the only level that has no 1-Ups.
It was confirmed in
devcast that they want to revamp Jet Pack Adventure.  If you have all the stamps, you still won't receive double coins.
The 1-up locations are:
Level 1: There are no 1-ups in this level.
Level 2: Go straight up at the beginning of the level and dodge the windmills. Travel at the top of the level until you find it.
Level 3: When you get to the top of the mountain near the end of the level, go left to find the 1-up in a windmill.
Level 4: At the end of the level, when you see the "Land here" sign continue going down to find the 1-up.
Level 5: Stay on the right of the pit until you see a warning sign (triangle with an exclamation mark on). Go right and then up to find the 1-up. According to Gary the Gadget Guy, the floating coins in the game have a helium coated alloy "which allows small metal objects to float". 
The message that appears after you complete the game without collecting any coins.