"It was good fun. I was a bit apprehensive because I've not pulled on my boots for a good while, but I felt alright when I got out on the pitch," Roy told the BBC.
"It was great seeing the old boys and reviving the old memories.
"I keep myself pretty fit in the gym and I go out for a wee jog but nothing beats playing a game of rugby."
Roy, who celebrated after the game by drinking from a bottle of port, added: "I didn't feel the pain until after I sobered up.
"I actually felt quite good on Saturday morning, but on Sunday I needed a couple of baths to soften myself off.
"But I think we'll have another go next year."
The charity match raised hundreds of dollars for Strathcarron Hospice.
The game's organiser Allan Imrie praised the 95-year-old winger's spirit.
"Easton's a unique force of nature. He still works out and goes for a run every day," Imrie told the BBC.
"Some people might have worried about his age and whether he'd hurt himself but he's really unbreakable.
"He was up and down the pitch like a youngster and I can vouch that he's still rock solid in the scrum - it's like scrumming a brick wall."
Before the charity match, Roy's swansong was the over-35s Golden Oldies World Cup at Murrayfield in 2008. He was also awarded with a Stirling civic award at Stirling Castle for his contribution to the sport.
