The best part of adulthood is fulfilling childhood fantasies, such as living in a tree house, buying a pet armadillo, and wearing a drinky-bib not because you have to, but because it feels right. Revel in the adult life with today's Groupon: for $8, you get $16 worth of specialty cocktails and beers at Atomic Koi Cocktail Lounge, located in Fitchburg.

Atomic Koi's extensive drink menu runs the liquid gamut, ranging from flavored martinis to mojitos to a sizeable beer list. Each drink is hand-crafted with precision by a savvy bartender, pouring indulgent concoctions such as the mango or pomegranate mojito, a mixture of fresh mint, lime, sugar, and rum ($5 each). Tantalize tongue buds with a chocolate martini ($6), or journey to a different dimension of deliciousness with the Monkeys in Space ($6), a Tang-inspired martini that mixes 3 Olives Rangtang, Patron Citronage, orange juice, and 7-Up mined from the lemon 'n' lime rivers of Neptune.

Atomic Koi Cocktail Lounge offers a warm décor of dark, zen-inspired wood throughout, rock-lined walls, and plenty of booths amid a spacey lounge atmosphere. Once the winter draws to a close and the groundhog officially eats its shadow, diners can enjoy a cold drink on the outdoor patio. Atomic Koi boasts shuffleboard, pool, darts, a slew of board games, and Ms. Pac-Man for the electronically inclined.

Reviews

Reviews are limited but Atomic Koi Cocktail Lounge gets a 4.5-star average rating from six Yelpers:

• This place is pretty sweet. Great atmosphere, good selection of music. Good tap beers. Old movies on roll, nice chill bar. – M. M., 6/15/10
• The bartender was very attentive and the drinks were great. If you're looking for a more "hip" bar scene and want to be off-campus, check this place out. – Diedra T., 6/8/10