Last week, the 31-year-old Brighton midfielder was named in the Wales squad for their upcoming friendlies, over two years after his last call-up.
"Wales manager Chris Coleman said to have a better chance of going in the summer he'd like to see me playing regularly," Crofts told BBC Radio Kent.
"I wasn't guaranteed that with Brighton, so it was a tough decision."
Crofts has featured 18 times for the Seagulls, who are second in the Championship, this season but his last outing came in the defeat by Cardiff on 20 February.
The former Norwich man has won 27 caps for Wales, with the last of those coming against Serbia in September 2013.
However, he could add to those in the friendlies against Northern Ireland and Ukraine during the international break.
"With the Euros coming up for Wales it was important for me to get some games under my belt before the end of the season," he added.
"After speaking to Chris, my place isn't guaranteed even if I play, but it gives me the best opportunity."
Crofts began his career at Gillingham and has returned to Priestfield Stadium until the end of the campaign, although Brighton have a 28-day recall clause as part of the deal.
He scored 19 goals in 191 games in his first stint at the Kent club and he hopes he can help the Gills, who are fourth in League One, win promotion to the Championship.
"This year I have got three massive goals; Brighton to get promoted, Gillingham to get promoted and a place at the Euros," he said.
"I am going to work as hard as I can to achieve those things. I'll give it everything I have got."

22 May 2017 Last updated at 07:13 BST
A team of researchers say they've come up with a new exercise that cuts the risk of kids getting hurt when playing rugby.
The exercise could now be introduced in schools.
Watch Jenny's report for more.

About 41,000 people descended on the city's Golden Mile to mark the Hindu festival of light, with entertainment including fireworks and dancing.
The lights switch on earlier this month also attracted a record attendance with 37,000 in Leicester's south Asian area.
The festival, also marked by Jains and Sikhs, celebrates the victory of good over evil.
At the centre of Leicester's celebrations was a 110ft (34m) ferris wheel, known as the Wheel of Light. About 6,000 coloured lamps were strung up around the city.
As well as fireworks and the street lights, shops put on entertainment and there was traditional dancing and music to mark the festival.
Rangoli sand art decorations and light displays also wowed the gathered crowds.
The demolition of the Belgrave Flyover last year allowed for an extension of the celebration along the full length of Belgrave Road.
Andrew Crofts says his ambition to play at Euro 2016 is part of the reason for his loan move to Gillingham.
[NEXT_CONCEPT]
Rugby is not the most gentle of sports and it's been hitting the headlines because of some bad head injuries.
[NEXT_CONCEPT]
A record number of people celebrated Diwali in Leicester in what is thought to be the largest event outside India.